After FHO surgery, every pound of body weight your dog carries has a direct effect on how the false joint forms, how quickly your dog returns to weight-bearing, and how well the hip functions long-term.

Diet and weight management aren't passive concerns during FHO recovery. They're active outcome variables you control every day.

Quick answer: During the first two weeks of crate rest, reduce your dog's calorie intake by 10 to 15%; activity drops sharply, and maintaining pre-surgery portions leads to weight gain that stresses the forming false joint. As rehabilitation progresses and activity increases, gradually restore calories to match the new activity level. Long-term, maintaining a lean body weight is the most controllable factor in protecting the false joint over the dog's lifetime.

Key takeaways

• Reduce calories 10 to 15% during early recovery: activity drops sharply; pre-surgery portions cause weight gain.
• Weight gain slows false joint formation and increases stress on the healing hip.
• Lean dogs recover faster: they walk sooner, need less pain medication, and rebuild muscle more effectively.
• Calories should increase gradually as rehabilitation progresses and walks lengthen.
• Joint-supportive supplements (omega-3s, glucosamine) complement diet but don't substitute for weight control.
• Long-term lean body weight is the most controllable factor protecting the false joint for years.

Why weight matters so much after FHO

The false joint that forms after FHO is not bone. It's a fibrous cushion of scar tissue supported by the surrounding muscles. Unlike a normal joint or a total hip replacement implant, it has no intrinsic mechanical strength. Its load-bearing capacity depends entirely on the muscle surrounding it and on the body weight pressing down on it.

An overweight dog places more load on the forming false joint at precisely the time when it is most vulnerable. The consequences are direct:

• Scar tissue forms under more stress, potentially producing a denser, less pliable false joint
• The dog is more reluctant to use the leg, increasing muscle atrophy
• Muscle atrophy further reduces false joint stability
• More weight on a poorly muscled false joint creates a feedback loop of worsening function

Lean dogs consistently recover faster, begin bearing weight sooner, and achieve better long-term function. This isn't subjective: it's a consistent finding across FHO outcome research and clinical observation.

Phase 1 (days 1 to 14): adjusting for early recovery

Calorie reduction

During the first two weeks, your dog is in crate rest. Activity drops dramatically compared to any pre-surgery baseline. If you continue feeding the same amount, weight gain is almost certain.

Recommended reduction: 10 to 15% below the pre-surgery daily amount.

For most dogs, this is a small adjustment: if you were feeding 2 cups per day, drop to approximately 1.7 to 1.8 cups. The exact amount depends on the food's caloric density.

Managing reduced or variable appetite

Many dogs have reduced appetite for 1 to 3 days post-surgery as anesthesia clears. This is normal and not a reason for concern.

If appetite is poor in the first few days:

• Offer smaller, more frequent meals (3 to 4 times daily rather than 2)
• A brief transition to a bland diet (boiled chicken and plain white rice) can help if the stomach seems sensitive after anesthesia and medications
• Warm the food slightly: the aroma can encourage eating in a reluctant dog
• Do not add rich foods or high-fat treats, which can cause GI upset

Hydration

Ensure fresh water is always accessible. Some dogs drink less than usual in the first day or two after anesthesia. If your dog hasn't drunk water voluntarily within 12 to 24 hours of coming home, offer water by hand or add a small amount of low-sodium chicken broth.

Phase 2 (weeks 2 to 6): syncing calories with rehab activity

As rehabilitation progresses and leash walks increase from 5 to 20 minutes, calorie needs gradually increase. The goal is to match energy intake to energy expenditure as accurately as possible, keeping the dog lean but not underfueling the muscle-building process.

A practical approach:

• Start of this phase: maintain the 10 to 15% reduction
• By week 4 to 5 (when walk duration has increased meaningfully): restore approximately half the reduced amount
• By week 6 (if activity is progressing well): return to the pre-surgery baseline or slightly below

If the dog is gaining weight despite increased activity, reduce portions. If the dog is losing body condition (ribs easily felt, muscle wasting progressing beyond the operated leg), increase slightly.

Body condition scoring

Ask your vet to assess your dog's body condition score (BCS) at each recheck visit. The BCS scale (1 to 9, ideal at 4 to 5) provides an objective measure of whether your dog is at appropriate weight. An underweight dog won't have the resources to rebuild muscle; an overweight dog places excess load on the false joint.

Phase 3 (weeks 6 to 12+): building toward long-term management

As your dog approaches full activity, the diet transitions from recovery-focused to long-term joint health maintenance.

Portion adjustment to activity level

Match daily portions to daily activity level:

• Longer walk day: slight increase in daily food amount acceptable
• Rest day or reduced activity: reduce portions slightly

Treating the diet as fixed regardless of activity variation is a common cause of slow weight gain over weeks and months.

Joint-supportive diet options

For dogs with ongoing hip conditions (ongoing arthritis risk, multiple joint involvement, older dogs), a prescription joint health diet or senior diet formulated for joint support may be appropriate. Discuss with your vet at the 8 to 12 week recheck whether a diet change makes sense for your dog's long-term needs.

Supplements that support recovery and joint health

Diet alone is the primary tool, but supplements can support the recovery process and long-term joint health.

Omega-3 fatty acids (fish oil)

Omega-3 fatty acids (EPA and DHA) have the strongest evidence base of any joint supplement in dogs. They reduce inflammatory activity in joints and have been shown to improve clinical signs of hip arthritis in multiple published studies.

TPLO Info (which covers orthopedic post-surgical nutrition broadly): Omega-3 fatty acid supplements may reduce inflammation and support joint health post-surgery.

Dosing: Follow the product label for your dog's weight or consult your vet. Fish oil derived from marine sources (salmon oil, sardine oil) contains the EPA and DHA forms most relevant to joint inflammation.

Glucosamine and chondroitin

Support cartilage maintenance and joint fluid quality. The false joint doesn't have cartilage, but adjacent joints and any residual cartilage surfaces benefit from support.

Evidence in dogs is modest but consistent with benefit, particularly for dogs with concurrent hip or stifle arthritis.

Green-lipped mussel

A natural source of omega-3 fatty acids and glycosaminoglycans. Often included in commercial joint support products.

Foods to avoid during recovery

• High-fat table scraps: calorie-dense, easy to add unintentionally; cause weight gain without nutritional benefit
• Rawhides and high-calorie chews: consider these as part of the daily calorie total, not extras
• Grain-free exotic protein diets without veterinary guidance: some have been associated with cardiac concerns in dogs; consult your vet before changing diet type significantly

Long-term weight management: the most durable joint protection

Once the recovery period is complete, maintaining ideal body weight is the most impactful ongoing action you can take to protect the false joint over the dog's lifetime.

Key principles:

• Weigh your dog every 1 to 2 months at home or at the vet
• Adjust portions if weight trends up or down
• Increase low-impact exercise (walking, swimming) rather than increasing food on active days
• Reassess at every annual vet visit whether the current diet type and amount are still appropriate for the dog's age, activity level, and body condition

For how diet and weight affect the overall recovery timeline, see recovery timeline that diet supports.

For how weight management connects to long-term FHO outcomes, see how weight management affects long-term outcomes.

Diet and physical therapy work together as the two most controllable post-FHO outcome variables. For how diet and physical therapy interact to support recovery, see how diet and physical therapy work together.

Recheck schedule for weight monitoring

The SustainableVet post-FHO nutrition protocol recommends formal weight and body condition assessment at:

• Week 2: First suture removal recheck; weight baseline
• Week 6: Rehabilitation progress recheck; adjust feeding plan if weight is trending wrong
• Week 12: Final primary recovery recheck; transition to long-term maintenance

Between formal rechecks, weekly home weighing with a consistent scale gives you a real-time read on whether the current feeding plan is working.

For how diet fits within the broader post-operative care picture, see overall post-operative care.

Frequently asked questions

Should I feed my dog more protein after FHO to help rebuild muscle?

Adequate protein is important for muscle recovery. Most commercial dog foods formulated for adult dogs provide sufficient protein for recovery when fed at appropriate amounts. If your dog is on a very low-protein or restricted diet for other medical reasons, discuss with your vet whether protein intake is adequate for the recovery phase. Increasing protein through meat additions is usually not necessary if the base diet is appropriate.

My dog is refusing to eat after surgery. How long should I wait before worrying?

Reduced appetite for 1 to 3 days is normal after anesthesia and surgery. If your dog hasn't eaten anything meaningful by day 3, or if they're vomiting or showing other signs of nausea, contact your vet. Some dogs need anti-nausea medication to get their appetite back on track, particularly if they're sensitive to NSAIDs.

Can I give my dog joint supplements from the start of recovery?

Most joint supplements are safe to start immediately post-surgery and may support recovery from the beginning. Check with your vet on any specific product, particularly if your dog is on other medications, to confirm there are no interactions. Fish oil, glucosamine, and chondroitin have good safety profiles in dogs.

How do I know if my dog's weight is affecting their recovery?

Signs that weight may be a factor: the dog is reluctant to use the leg despite adequate pain control, rehabilitation progress is slower than expected, or the dog seems to be gaining weight during recovery. Ask your vet to check body condition score at each recheck visit. A BCS above 5 out of 9 during recovery warrants a conversation about diet adjustment.

Weight management during FHO recovery isn't about strict calorie counting or elaborate nutritional science. It's about the straightforward reality that a leaner dog recovers better than a heavier one. Reduce portions during crate rest. Restore them gradually as activity increases. Keep your dog lean long-term. These three steps protect the false joint for years, and they're entirely within your control.

Resources

• TPLO Info. Post-TPLO Surgery Dog Nutrition: What to Feed for a Quick Recovery. tploinfo.com
• Newport Veterinary Referral Hospital. Post-Surgery Pet Care: 10 Foods for Faster Recovery. newportvetrh.com
• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com

After FHO surgery, the false joint that forms in place of the removed femoral head doesn't develop on its own. It forms in response to movement.

Physical therapy is not optional after FHO. It's the mechanism by which the surgery produces a functional outcome. Without consistent rehabilitation, the scar tissue that becomes the false joint forms too tightly, muscles atrophy further, and the leg that was operated on may not recover full use.

Quick answer: Physical therapy after FHO begins within the first 1 to 3 days with passive range-of-motion exercises, progresses to leash walking and sit-to-stands in weeks 1 to 4, and adds hydrotherapy and progressive strengthening in weeks 4 to 12. The goal is to shape the forming false joint, rebuild muscle mass, and restore normal gait. Rehab duration ranges from 8 to 16 weeks depending on the dog.

Key takeaways

• Rehab begins within the first 1 to 3 days: waiting too long allows scar tissue to form incorrectly.
• Passive range-of-motion exercises are the essential first step: they preserve joint flexibility during early healing.
• Sit-to-stands are the most important active exercise for rebuilding hindlimb muscle after FHO.
• Hydrotherapy accelerates muscle rebuilding without stressing the forming false joint.
• Hill walking in later stages efficiently builds hip extension strength.
• Without rehab, FHO outcomes are significantly worse: muscle atrophy and joint stiffness are the main consequences.

Why physical therapy matters more after FHO than most surgeries

Most orthopedic surgeries create a stable repair that heals with rest. FHO is different. The surgery creates a space where a false joint must form from the body's own fibrous tissue. The quality of that false joint depends directly on the movement that occurs during its formation.

Bloomfield Pointe Veterinary Hospital states: "Unlike most orthopedic procedures, dogs and cats with FHOs are recommended to have controlled exercise and physical therapy early after surgery. Physical rehabilitation has been shown to promote early weight bearing and enhanced function post-FHO."

Two dogs who have the same FHO surgery performed identically can have dramatically different outcomes depending on how consistently physical therapy was applied during recovery.

Phase 1 (days 1 to 7): managing early healing and preventing stiffness

Icing

For the first 3 to 5 days, ice the surgery site to manage swelling and reduce inflammation.

Animal Clinic of Billings protocol: "The first 3 to 5 days the surgery limb should be iced 2 to 4 times daily. Place a rolled towel between the limbs so the surgery limb is kept parallel to the floor. Place a lightweight towel between the limb and the ice pack. Ice should be applied for 15 to 20 minutes."

Do not place ice directly on the skin. Keep sessions to 15 to 20 minutes maximum.

Passive range-of-motion exercises (PROM)

PROM begins within the first 1 to 3 days post-surgery, with your vet's instruction.

Royal Canin Academy's rehabilitation protocol for post-FHO dogs notes that PROM for hip extension is particularly important, as regaining active hip extension is the primary rehabilitation goal after FHO.

Step-by-step PROM:

1. Lay your dog on their side, operated leg facing up
2. Place one hand at the hip for support; the other supports just below the knee
3. Gently flex (bend) the hip and knee together, moving slowly toward the dog's belly
4. Hold 3 to 5 seconds at comfortable end range
5. Slowly extend the leg back out
6. Repeat 10 to 15 repetitions per session
7. Perform 2 to 3 sessions daily

Key rules:

• Move slowly. There should be no abrupt movements.
• Stop immediately if the dog vocalizes, tenses up, or tries to pull away
• Never push through resistance or discomfort
• The motion should feel like a gentle, slow pendulum

Gentle walking

Short leash walks for bathroom trips only: 5 to 10 minutes, slowly, on a leash. Let the dog pace. The goal is controlled movement, not distance.

Phase 2 (weeks 1 to 4): building early strength and false joint formation

Controlled leash walking

This is the core exercise of weeks 1 to 4. Walking on a leash at a slow pace encourages the dog to load the operated leg, which is exactly what shapes the forming scar tissue.

Protocol:

• Start: 5 to 10 minutes, 2 to 3 times daily, flat ground
• Increase: 5 minutes per week as the dog tolerates
• Pace: Slow enough that the dog uses the leg with every step. Faster pacing allows the dog to carry the leg.
• Surface: Grass or packed dirt preferred; avoid slippery pavement

Animal Clinic of Billings: "Begin leash walks. Start with 5-minute leash walks 2 to 3 times a day for one week, increase the duration of the walks by 5 minutes each week until your dog is taking 20-minute leash walks without issue."

Sit-to-stand exercises

Sit-to-stands are the single most important active exercise after FHO. They directly target the quadriceps and hip extensors, the primary muscle groups that stabilize the false joint.

How to perform sit-to-stands:

1. Ask your dog to sit in a controlled position
2. Use a treat at nose level to lure them slowly to standing
3. Once fully standing, cue them back to sit
4. Repeat 5 to 10 repetitions per session
5. 2 to 3 sessions daily

Watch carefully: the dog should be using both rear legs equally during the sit-to-stand. If the dog is consistently pushing off the good leg and not using the operated side, this is worth noting and discussing with your vet or rehab therapist.

Start with 5 repetitions and increase to 10 as strength improves. Royal Canin Academy notes that sit-to-stand exercises can be introduced soon after surgery to strengthen hindlimb muscles without the pain associated with full hip extension.

Gentle massage

Light circular massage along the thigh muscles on the operated side, 3 to 5 minutes once or twice daily. This improves local circulation, reduces muscle tension, and helps the dog become more comfortable bearing weight on the leg.

Phase 3 (weeks 4 to 12): progressive loading and advanced therapy

Hydrotherapy

Hydrotherapy is one of the most effective rehabilitation tools available for FHO recovery. Water buoyancy reduces the load on the forming false joint while water resistance provides meaningful muscle engagement.

Animal Clinic of Billings recommends: "Schedule your dog's hydrotherapy sessions 2 or 3 times weekly for the next 4 to 8 weeks."

Types of hydrotherapy:

• Underwater treadmill: The dog walks on a submerged treadmill with water level at the stifle or below. Royal Canin Academy notes that water level at the stifle or lower promotes more functional activity during underwater treadmill sessions. An inclined treadmill setting may also help, though the inclination typically needs to exceed 5% to produce meaningful hip range-of-motion improvement.
• Pool swimming: More cardiovascular and involves greater rotational movement. Usually introduced after underwater treadmill sessions.

Uphill walking

Controlled walking on gentle inclines builds hip extension strength more efficiently than flat-ground walking. The uphill motion requires greater engagement of the gluteal muscles and hip extensors.

Introduce gentle inclines from week 4 to 6 once flat-ground walking is managed comfortably. Progress the incline gradually. Running on hills is not appropriate at this stage.

Balance and proprioception exercises

Balance work activates the stabilizing muscles around the false joint and restores the dog's proprioception (awareness of where the leg is in space).

• Balance disc or wobble board: Standing with hind paws on an unstable surface activates the stabilizing muscles
• Cavaletti poles: Walking over low poles at stride length encourages deliberate hind leg placement
• Weight shifting: Gentle lateral weight shifts while the dog stands encourage loading of the operated side

How physical therapy affects long-term outcomes

The link between rehabilitation compliance and FHO outcomes is clear in the published literature. VCA Animal Hospitals states: "Active dogs often experience better results with FHO than less active dogs. The muscle mass that has been built up through activity helps to stabilize the joint, allowing the dog to regain pain-free mobility more quickly."

Dogs who receive consistent, structured rehabilitation:

• Form more supple, functional false joints
• Maintain better muscle mass
• Return to weight-bearing sooner
• Show less residual lameness at 6 and 12 months
• Require less long-term pain management

Dogs who are insufficiently rehabilitated:

• Form stiffer, more restrictive false joints
• Have more pronounced muscle atrophy
• Take longer to return to functional use
• Are more likely to carry the leg persistently

For how therapy contributes to overall FHO success rates, see how physical therapy improves success rates. For the full recovery timeline that physical therapy supports, see recovery timeline that physical therapy supports.

Working with a certified canine rehabilitation therapist

While many exercises can be performed at home with veterinary guidance, a certified canine rehabilitation therapist (CCRT or CCRP) offers advantages that home programs can't fully replicate:

• Underwater treadmill access: Not available at home
• Gait assessment: A therapist can observe how the dog walks and identify compensation patterns before they become entrenched
• Laser therapy: Low-level laser therapy reduces inflammation and promotes tissue healing; often used in the early post-FHO period
• Individualized program design: Tailored to your dog's specific grade of recovery, size, and pace of progress
• Hands-on technique correction: Ensures PROM and other exercises are done correctly

Even one to two sessions with a rehab therapist to establish correct home technique can meaningfully improve recovery trajectory.

For how physical therapy affects long-term outcomes beyond the immediate recovery period, see how therapy affects long-term outcomes.

For the overall recovery expectations that physical therapy sits within, see overall recovery expectations.

Frequently asked questions

When should I start hydrotherapy after FHO?

Most dogs can begin hydrotherapy 4 to 6 weeks post-surgery, after suture removal and once the incision is fully healed. Royal Canin Academy notes that underwater treadmill use is appropriate after suture removal. Starting before this risks wound contamination. If wound healing is delayed, hydrotherapy start is also delayed.

Can I do all the rehabilitation at home?

Yes, with guidance. PROM, leash walking, sit-to-stands, and massage can all be performed at home following your vet's instructions. The exercises that require specialist equipment (underwater treadmill, laser therapy) need a rehab facility. If a rehab facility isn't accessible, a home program consistently followed produces good results for most dogs.

What if my dog refuses to do the exercises?

Use food motivation for active exercises like sit-to-stands. For PROM, timing matters: do it 30 to 60 minutes after pain medication has taken effect, when your dog is most comfortable. Keep sessions short and positive. Never force the exercises. If your dog consistently resists, contact your vet or a rehab therapist to assess whether pain management needs adjustment.

How long does physical therapy need to continue?

Most dogs complete their primary rehabilitation program by 8 to 12 weeks post-surgery. Some dogs, particularly large breeds or those with delayed recovery, may benefit from continued exercise management for 4 to 6 months. Even after formal rehab is complete, maintaining good muscle condition through regular appropriate exercise contributes to long-term outcome.

FHO gives the body the conditions to form a new joint. Physical therapy determines what that joint becomes. It's the least glamorous part of FHO recovery, and it's the most important. Fifteen minutes of exercises twice a day for ten weeks is a real commitment. What it produces is the difference between a dog who carries the leg and a dog who uses it.

Resources

• Animal Clinic of Billings. FHO Rear Limb Dog Surgery: Post-Operative Rehabilitation Protocol. animalclinicofbillings.com
• Royal Canin Academy. Post Hip Surgery Recovery and Rehabilitation. academy.royalcanin.com
• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com
• Bloomfield Pointe Veterinary Hospital. Femoral Head Ostectomy (FHO). bloomfieldpointeveterinaryhospital.com

FHO surgery sounds drastic. Permanently removing a bone from your dog's hip is a significant decision, and it deserves a clear-eyed look at what it delivers and what it doesn't.

This guide gives you an honest breakdown of the benefits and limitations of FHO so you can make a decision based on what's actually true about this procedure rather than the most optimistic or the most alarming version of it. For a full explanation of what the surgery involves, see what FHO surgery involves.

The verdict up front: FHO reliably eliminates chronic bone-on-bone hip pain in most dogs. In small to medium dogs, the functional outcomes are usually excellent. In large breeds, outcomes are more variable. The main trade-off is that FHO is a salvage procedure that relieves pain without restoring normal joint anatomy, and the false joint it creates doesn't perform like a natural hip.

Key takeaways

• FHO's primary benefit is reliable pain relief: most dogs experience significant reduction in hip pain.
• Small dogs do best: under 50 lbs, the false joint provides good function and most return to normal activity.
• Large dogs have more variable outcomes: the false joint bears more load and may not support full function.
• FHO is significantly cheaper than THR: typically $1,000 to $2,500 vs. $4,000 to $8,000 per hip.
• Rehabilitation commitment is non-negotiable: outcomes are poor without consistent post-surgical exercise.
• FHO is irreversible: once the femoral head is removed, it cannot be replaced without converting to THR.

The pros of FHO surgery

1. Reliable pain relief

The single most consistent benefit of FHO is pain elimination. By removing the femoral head and neck, the source of bone-on-bone pain is gone. Dogs that have been struggling with chronic hip pain for months often show visible improvement within weeks of surgery.

PetMD states that most pets experience reduced pain and improved quality of life after FHO. For a dog living in chronic pain that conservative management couldn't control, this outcome is transformative.

2. Lower cost than total hip replacement

FHO is significantly more accessible financially than THR. Cost comparison:

• FHO: Typically $1,000 to $2,500 per hip
• THR: Typically $4,000 to $8,000 per hip

The cost difference reflects the surgical complexity. FHO doesn't require prosthetic implants or the specialized surgical training and equipment that THR demands. For owners who cannot afford THR, FHO provides a real surgical path to pain relief at a fraction of the cost.

For the full FHO cost breakdown, see cost as a factor in the pros and cons.

3. Lower surgical complexity and risk

FHO is a simpler surgical procedure than THR. It doesn't require implant fitting, press-fit accuracy, or the extended operative time of total joint replacement. This translates to:

• Shorter procedure time
• Lower anesthetic risk from shorter exposure
• Fewer intraoperative complications
• Accessible at more veterinary facilities than THR, which requires specialist centers

Global Vet Specialists notes: "FHO is a low-risk procedure." The trade-off, as they also note, is a higher risk of functional limitation compared to THR.

4. Good functional outcomes in small and medium dogs

For dogs under 45 to 50 lbs, FHO produces reliable functional recovery. The false joint of scar tissue and muscle that forms after surgery provides enough cushioning and stability for comfortable daily movement in most small dogs.

VCA Animal Hospitals reports: "Active dogs often experience better results with FHO than less active dogs. The muscle mass that has been built up through activity helps to stabilize the joint."

Small breeds, cats, and active dogs with good muscle mass form the best false joints. Most return to walking, trotting, and playing without chronic pain.

5. Eliminates bone-on-bone contact permanently

Once the femoral head is removed, bone-on-bone grinding within the hip joint is structurally impossible. Unlike conservative management, which manages symptoms without addressing the source, FHO removes the source entirely.

This makes FHO particularly well-suited to conditions where the joint itself is the pain generator and no amount of medication can adequately manage what the bone is doing, such as severe hip dysplasia, femoral head collapse in Legg-Calvé-Perthes disease, or irreparable fractures.

For the success rates associated with these outcomes, see success rates to weigh in the decision.

The cons of FHO surgery

1. Not a normal joint replacement

FHO is a salvage procedure. The technical term means it salvages function and comfort when normal joint anatomy cannot be preserved. What it creates, a false joint of fibrous scar tissue, is anatomically very different from a normal hip.

This distinction matters because:

• The false joint doesn't have the articulating surfaces, cartilage, or joint fluid of a normal hip
• It functions as a cushioned buffer rather than a mechanical bearing surface
• Its long-term performance depends entirely on the surrounding muscle mass

2. Variable outcomes in large breeds

The same false joint that works well in a 15 lb dog faces much greater mechanical demand in a 70 lb dog. Published research confirms this:

A case series from the Journal of Veterinary Surgery found unsatisfactory outcomes in four large-breed dogs after FHO, with ongoing weight-bearing lameness, hip pain on extension, and bony proliferation despite appropriate aftercare. The authors noted that lighter animals have a mechanical advantage in forming functional false joints.

Top Dog Health states: "While there are no specific weight guidelines for the use of an FHO, smaller dogs typically have a better outcome since less stress and force are carried on the false joint."

For large breeds, total hip replacement typically delivers superior long-term function when it's a viable option.

3. Residual gait abnormality in some dogs

Even dogs who achieve good pain relief may have a residual gait difference, particularly noticeable as a shortened stride on the operated limb or slight asymmetry at speed. Most owners accommodate to this. Dogs who are heavily relied on for athletic or working activity may find this limiting.

PetMD notes: "Pets who undergo FHO may also have long-term lameness or gait abnormalities. With dog FHO surgery, these abnormalities are usually more severe in large-breed dogs."

4. Requires significant rehabilitation commitment

FHO outcomes are highly dependent on post-operative rehabilitation. Unlike some surgeries where rest produces healing, FHO requires the dog to use the leg from the first few days after surgery. Early movement is what shapes the forming scar tissue into a functional false joint.

Without consistent rehabilitation, the scar tissue can form too tightly (limiting range of motion), muscle atrophy can worsen, and the false joint may not develop adequate function. This creates a real demand on the owner's time and consistency for several months post-surgery.

5. Irreversible procedure

Once the femoral head and neck are removed, they cannot be restored. If FHO outcomes are unsatisfactory in a large dog, conversion to total hip replacement is technically possible but considerably more challenging than performing THR as the primary procedure.

This irreversibility is one reason why patient selection matters and why the decision warrants thorough discussion with a veterinary surgeon before proceeding.

For a direct comparison of how FHO weighs against total hip replacement, see comparing FHO to total hip replacement.

The cons of not proceeding when FHO is indicated

An honest pros and cons analysis must include the cost of inaction for dogs who genuinely need surgery.

For dogs where conservative management has been maximized and is no longer controlling pain:

• Progressive joint degradation continues with every step on a damaged hip
• Muscle atrophy worsens as the dog further avoids the leg, making eventual surgery harder and recovery longer
• Quality of life declines as pain becomes more constant and activity more limited
• Arthritis in adjacent joints can develop as the dog compensates by loading the opposite hip, knees, and spine abnormally

For dogs in this situation, the question isn't surgery versus a comfortable status quo. It's surgery now versus more damage before surgery later.

For alternatives that may still be appropriate depending on the clinical picture, see alternatives if pros don't outweigh cons.

For what the long-term outcomes of FHO look like across different patient types, see long-term outcomes to consider.

Frequently asked questions

Is FHO a good option for large dogs?

FHO can provide meaningful pain relief in large dogs, but functional outcomes are more variable than in small dogs. The false joint bears more mechanical load and may not support the full activity level the dog had before surgery. For large, active dogs where budget allows, THR generally delivers superior function. FHO remains appropriate for large dogs when THR isn't feasible due to financial constraints, health factors, or owner preference.

How long does it take to know if FHO worked?

Most dogs show significant pain improvement within the first few weeks post-surgery. Functional improvement, how well the dog uses the leg, typically develops progressively over 3 to 6 months as the false joint matures and muscle mass rebuilds. Full assessment of outcomes usually requires 4 to 6 months of rehabilitation.

Can FHO be done on both hips if both are affected?

Yes, but bilateral FHO is typically staged rather than done simultaneously. Performing both hips at once leaves the dog with no reliable support leg during recovery, which significantly complicates rehabilitation. Most surgeons recommend operating on one hip at a time, with 6 to 12 weeks of recovery between procedures.

Is it okay to choose FHO over THR for financial reasons?

Yes. Financial limitations are a legitimate part of the treatment decision. FHO provides genuine pain relief and acceptable outcomes, particularly in smaller dogs. A dog living pain-free after FHO is substantially better off than a dog not treated at all because THR was unaffordable. Choosing FHO over THR for financial reasons is not a lesser or wrong choice; it's a pragmatic decision that gives your dog a meaningful improvement in quality of life.

FHO works. For the right dog, it reliably eliminates the source of chronic hip pain and provides good functional recovery. For large, active breeds where full athletic restoration is the goal, it may fall short of what THR delivers. Knowing which situation your dog falls into, and entering the decision with clear expectations about what FHO does and doesn't promise, is the most important preparation you can do.

Resources

• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com
• PetMD. Femoral Head Ostectomy in Dogs and Cats. petmd.com
• Global Vet Specialists. Femoral Head Ostectomy (FHO). globalvetspecialists.org
• Top Dog Health. Femoral Head Osteotomy for Dogs. topdoghealth.com

Your dog just had major hip surgery. You're home, the discharge instructions are in your hand, and you're trying to figure out what the next few weeks actually look like.

FHO recovery has one feature that surprises most owners: unlike most orthopedic surgeries, you're encouraged to get your dog moving relatively quickly. The false joint that replaces the removed femoral head needs movement to form correctly. Rest alone won't get your dog there.

Quick answer: Most dogs begin toe-touching or light weight-bearing within the first 1 to 2 weeks after FHO. Walking ability improves progressively through weeks 3 to 6. Most dogs regain good functional mobility by 8 to 12 weeks with consistent rehabilitation. The key difference from other orthopedic surgeries: early, controlled movement is encouraged, not discouraged. Your dog needs to use the leg for the false joint to form properly.

Key takeaways

• Early movement is essential, not optional: the false joint needs movement to form correctly.
• Expect limping for the first 2 to 4 weeks: this is normal and expected, not a sign of failure.
• Pain medication must be given as prescribed even when your dog seems comfortable.
• E-collar prevents licking the incision: licking is the most common cause of infection.
• The dog should start toe-touching within 1 to 2 weeks: no weight-bearing by week 3 warrants a vet call.
• Full functional recovery typically takes 8 to 12 weeks with consistent home rehabilitation.

The first 24 to 48 hours: coming home

Immediate effects of anesthesia

Your dog will be drowsy, disoriented, and uncoordinated for the first 12 to 24 hours after surgery. This is normal anesthesia recovery. Keep them confined, quiet, and comfortable. Don't let them navigate stairs or jump onto furniture.

Some dogs whine or seem anxious as anesthesia wears off. This is common and typically resolves within a few hours. Your dog may not recognize familiar people or places fully during this period.

Pain management from day one

Your vet will send your dog home with pain medication, typically an NSAID and sometimes gabapentin or a short-course opioid for the first few days. Give medications exactly as prescribed, on schedule, even if your dog seems comfortable.

Dogs are stoic. A dog that appears comfortable may still be in pain that will escalate if medication is skipped. Adequate pain control in the first days directly affects how willing the dog is to begin using the leg, which directly affects false joint formation.

Setting up the recovery space

Before your dog comes home, set up a confined recovery area:

• A crate or small pen, or a room blocked off from the rest of the house
• Non-slip surface: yoga mats or carpet runners over slippery floors
• Easy access to water without needing to stretch or step over anything
• Orthopedic or padded bedding that doesn't require climbing to enter

Countryside Animal Clinic recommends: "Many families set up a quiet, comfortable recovery space before surgery day arrives. Clear expectations reduce stress for both pets and people."

Week 1 to 2: early recovery

What's normal

• Swelling and bruising near the hip and thigh incision area
• Limping or completely avoiding the leg when walking
• Toe-touching: light, intermittent contact of the paw with the ground is a positive sign
• Reduced appetite for 1 to 3 days as anesthesia clears
• Increased sleep and low energy

Incision care

Check the incision daily. Normal appearance:

• Mild redness directly at the incision edges
• Slight swelling of the tissue near the incision
• A small amount of clear or slightly blood-tinged discharge in the first 48 hours

Contact your vet if you see:

• Spreading redness beyond the incision margins
• Yellow or green discharge
• Discharge with a foul odor
• The incision opening or pulling apart

E-collar: Must be worn at all times when you can't directly supervise. Licking the incision is the most common cause of post-surgical infection in dogs. The cone stays on until the incision is fully healed, typically 10 to 14 days.

Early movement: passive range of motion

Most vets recommend beginning very gentle passive range-of-motion (PROM) exercises within the first 1 to 3 days if the dog tolerates it.

How to do PROM:

1. Have your dog lying on their side, operated leg facing up
2. Support the leg at the hip and just below the knee
3. Slowly and gently flex (bend) the knee and hip
4. Hold for 3 to 5 seconds; extend slowly back out
5. Repeat 10 times, two to three times daily

Move slowly. Stop immediately if your dog vocalizes, tenses, or pulls away. Don't force the range.

Weeks 2 to 6: early rehabilitation

Weight-bearing progression

The operated leg should begin making regular contact with the ground during this period. Most dogs progress from toe-touching to partial weight-bearing by weeks 2 to 3.

If your dog is still not touching the leg to the ground by week 3, contact your vet. This may indicate inadequate pain control, excessive scar tissue formation, or another complication worth investigating.

Leash walks: how to start

Leash walks begin in week 1 or 2 once the dog shows willingness to use the leg. The approach is very different from walking for exercise:

• Duration: Start with 5-minute walks, 2 to 3 times daily on flat ground
• Pace: Slow. Let the dog dictate the pace; faster movement encourages carrying the leg rather than loading it
• Surface: Soft, flat ground; grass preferred over hard pavement
• Leash control: Short leash for control; no retractable leads

Increase walk duration by 5 minutes per week as the dog tolerates. If the dog is more lame after a walk than before, reduce the duration and progress more slowly.

Physical therapy and exercises

In weeks 2 to 4, additional exercises are introduced:

• Sit-to-stands: Slow, controlled sit-to-stand repetitions rebuild the hindlimb muscles that support the hip
• Gentle thigh massage: Stimulates circulation and keeps the muscle tissue supple
• Balance exercises: Very gentle weight-shifting as tolerated

For the detailed physical therapy protocol, see physical therapy that supports recovery.

Weeks 6 to 12: progressive return to activity

By week 6, most dogs with good rehabilitation progress are walking with noticeably improved confidence on the operated leg. The false joint has substantially formed and muscle mass is rebuilding.

Activities introduced in this phase:

• Longer leash walks: Progressive increase toward 20 to 30 minutes
• Controlled uphill walking: Gentle inclines build hindlimb strength efficiently
• Hydrotherapy (if available): Underwater treadmill or pool swimming; allows full muscle engagement without joint loading pressure
• Balance work: Balance discs, wobble boards

Still restricted through week 12:

• Off-leash running
• Jumping (on or off furniture, in and out of cars)
• Rough play with other dogs
• Stairs (supervised and slow only)

For the complete week-by-week breakdown with specific milestones, see day-by-day recovery timeline.

For the full home care checklist covering medications, incision care, confinement setup, and everything needed during the post-operative period, see post-operative care guide.

What to watch for: when to call your vet

Expected and manageable

Call your vet

For a detailed overview of complications and how to recognize them, see complications to watch for after surgery.

Diet during recovery

Reduce your dog's calorie intake by 10 to 15% during the crate rest phase. Activity drops significantly during recovery, and maintaining pre-surgery food intake leads to weight gain that stresses the forming false joint.

Smaller, more frequent meals are easier on the stomach if your dog's appetite is reduced or variable after anesthesia. Keep the diet consistent: sudden diet changes can cause digestive upset on top of surgical recovery stress.

For the full nutrition and weight management plan during FHO recovery, see diet and weight management during recovery.

What successful recovery looks like

At 8 to 12 weeks, a dog recovering well from FHO:

• Bears weight consistently on the operated leg during normal walking
• No longer avoids the leg during trotting or light play
• Thigh muscle mass on the operated side is visibly rebuilding
• Range of motion in the hip is improving
• Shows enthusiasm for walks and activity without post-walk lameness

Full athletic recovery, including running and jumping, typically requires 3 to 6 months rather than 12 weeks for most dogs.

Frequently asked questions

My dog is holding the leg up completely. Is that normal?

In the first few days immediately post-surgery, yes. By weeks 1 to 2, you should see at least toe-touching. By week 3, regular contact with the ground. Complete non-weight-bearing beyond 3 weeks warrants a vet assessment to check for pain, complication, or rehabilitation problem.

Can my dog sleep in my bed during recovery?

Not during the strict recovery phase. Getting on and off furniture involves jumping or climbing that stresses the healing hip. Set up a comfortable floor-level sleeping space. Once your vet clears activity at the 6 to 8 week recheck, you can reassess whether assisting your dog on and off the bed is appropriate for your specific dog.

When does the cone come off?

The E-collar typically stays on until the incision is fully healed and closed, usually 10 to 14 days. Your vet will confirm at the first recheck visit. Even after the cone is removed for the incision, consider using it at night or when you can't supervise if your dog is attentive to the leg area.

My dog seems fine after two weeks. Can I let them run?

No. How a dog looks from the outside at two weeks does not reflect how much healing has happened internally. The false joint is still forming. Running and off-leash play at two weeks risk muscular or soft tissue injury that will set recovery back significantly. Follow the activity progression from your vet's discharge instructions, not your dog's apparent energy level.

FHO recovery is a commitment, not an event. The surgery creates the conditions for healing. What happens in the following 8 to 12 weeks determines how completely your dog realizes those conditions. Early movement, consistent rehabilitation, weight management, and close observation are the four things you control that matter most.

Resources

• Countryside Animal Clinic. Dog FHO Surgery: What to Expect Before and After. countrysideanimalc.com
• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com
• PetMD. Femoral Head Ostectomy in Dogs and Cats. petmd.com

Finding out your puppy has hip dysplasia is alarming at any age. Finding out they might need surgery before they've finished growing raises a whole new set of questions.

FHO is safe for puppies. In fact, young dogs often adapt remarkably well to FHO because of their flexible, adaptive musculature and their capacity for rapid healing. But FHO is not always the first choice for a young dog, and understanding where it fits in the range of options helps you make the best decision for your specific puppy.

Quick answer: FHO is safe and effective for puppies of any age. The ACVS confirms FHO "can be done at any age." Puppies heal faster than adult dogs and adapt well to the false joint. However, for puppies under 10 months with no established arthritis, preventive procedures like DPO/TPO or JPS may be better options. FHO is most appropriate for puppies who have missed the window for preventive surgery, have irreparable fractures, or have Legg-Calvé-Perthes disease. For a full explanation of what FHO surgery involves, see what FHO involves.

Key takeaways

• FHO can be performed at any age, including in very young puppies.
• Puppies often recover faster than adult dogs due to adaptive musculature and rapid healing.
• Preventive surgeries (JPS, DPO/TPO) are preferred for puppies who still qualify by age and joint condition.
• Legg-Calvé-Perthes disease is a specific indication for FHO in young small-breed puppies.
• Early FHO in large-breed puppies carries the same size-related outcome limitations as in adult large dogs.
• Rehabilitation is even more critical in puppies, whose activity level may exceed what the healing false joint can handle.

Why puppies can develop hip dysplasia

Hip dysplasia develops during puppyhood. The joint forms abnormally as the puppy grows, producing looseness between the femoral head and the acetabulum. This looseness causes abnormal mechanics, cartilage damage, and, over time, osteoarthritis.

Large and fast-growing breeds are disproportionately affected: Labrador Retrievers, German Shepherds, Golden Retrievers, Rottweilers, and Saint Bernards among others. However, small breeds can also develop hip dysplasia, and specific conditions like Legg-Calvé-Perthes disease primarily affect small and toy breeds at a young age.

The American College of Veterinary Surgeons (ACVS) notes: "Early recognition of joint laxity is the key to preventing cartilage damage from progressive joint laxity. Puppies as early as 10 weeks old can be diagnosed with abnormal joint laxity."

FHO at any age: what the ACVS says

The ACVS is explicit that FHO "can be done at any age and can provide enough comfort in a dog weighing less than 60 to 70 lbs to avoid the daily use of anti-inflammatory pain medication."

This is important: age is not a contraindication for FHO. A puppy with a hip that is causing significant pain and can't be managed any other way is a candidate for FHO.

The more important question for puppies is whether FHO is the most appropriate choice for their age, or whether a different surgical option that takes advantage of the puppy's growth phase would produce a better outcome.

The three surgical options for puppies: when each applies

JPS (juvenile pubic symphysiodesis)

JPS is a preventive procedure available only in puppies under 20 weeks of age (PetMD: "less than 5 months old"). It closes a growth plate in the pelvis to change how the hip socket rotates during growth, improving hip congruity.

JPS is most appropriate for:

• Very young puppies (under 20 weeks) with confirmed hip laxity
• Dogs who haven't yet developed significant arthritis
• Cases where the goal is prevention of future joint disease, not treatment of current pain

JPS doesn't treat an already painful hip. It redirects development to prevent the condition from worsening. Once the window closes, JPS is no longer appropriate.

DPO/TPO (double or triple pelvic osteotomy)

DPO/TPO cuts and repositions the pelvic bones to improve how the socket holds the femoral head. It's performed in puppies typically under 10 months of age, before significant arthritis has developed.

Top Dog Health confirms: "In younger dogs with hip dysplasia, other surgical options include Triple Pelvic Osteotomy or Juvenile Pubic Symphysiodesis (JPS)."

DPO/TPO is most appropriate for:

• Puppies under 10 months
• Radiographic evidence of hip laxity but minimal joint damage
• Dogs who are good candidates for improving joint alignment before arthritis is established

Like JPS, DPO/TPO can't be used once significant arthritis is present. The preventive window closes as the puppy matures.

FHO

FHO is most appropriate for puppies when:

• The puppy has missed the window for JPS or DPO/TPO
• Arthritis is already established
• The puppy has Legg-Calvé-Perthes disease
• A traumatic fracture has occurred that can't be repaired
• THR is not appropriate (too young for skeletal maturity requirements, or financial constraints)

For the full FHO indication framework, see when puppies are candidates.

Why puppies respond well to FHO

Several features of puppy physiology make FHO outcomes in young dogs generally good:

Rapid healing capacity

Puppies' tissues heal faster than those of adult or senior dogs. The fibrous scar tissue that forms the false joint develops more quickly, and muscle mass rebuilds more rapidly with rehabilitation.

Adaptive musculature

Young dogs' muscles are highly adaptive. Puppies adjust their movement patterns and muscle development in response to the altered hip mechanics after FHO more readily than adult dogs with established movement habits.

Less established pain patterns

Dogs who have lived with chronic hip pain for years develop compensatory movement patterns that can persist even after pain is removed. Puppies treated early don't have years of compensation to unlearn.

Positive implications for false joint quality

Earlier treatment means less secondary joint damage (arthritis, acetabular changes) at the time of surgery. A cleaner post-FHO environment supports better false joint formation.

Legg-Calvé-Perthes disease: a specific puppy indication

Legg-Calvé-Perthes disease is one of the most common specific indications for FHO in young dogs. It primarily affects small and toy breeds, typically presenting in dogs under 12 months of age.

In Legg-Calvé-Perthes disease, the blood supply to the femoral head is interrupted, causing the bone to deteriorate and eventually collapse. The condition produces progressive hip pain and lameness in young small-breed dogs.

FHO is the standard treatment. The deteriorating femoral head is removed before it collapses further and causes secondary changes in the acetabulum. Young small dogs treated for Legg-Calvé-Perthes with FHO typically achieve excellent outcomes because:

• They are already small (false joint formation is easier)
• They are young (rapid healing and muscle adaptation)
• Early treatment prevents secondary joint damage

For hip dysplasia in puppies as the broader context, see hip dysplasia in puppies.

Size matters even in puppies

The size-related outcome difference that exists in adult dogs applies equally to puppies.

Small-breed puppies with hip dysplasia or Legg-Calvé-Perthes disease undergoing FHO consistently achieve excellent outcomes. Their future adult weight will be manageable for the false joint, and their adaptation to the altered mechanics is excellent.

Large-breed puppies undergoing FHO face the same long-term mechanical challenges as large adult dogs: more weight bearing on the false joint, less reliable long-term function. For large-breed puppies who haven't missed the preventive window, DPO/TPO is usually the preferred option. FHO for a large-breed puppy is appropriate when DPO/TPO is no longer possible and THR (which requires skeletal maturity) isn't yet appropriate.

For how success rates differ in younger dogs, see success rates in younger dogs.

Recovery expectations for puppies

Recovery after FHO in puppies follows the same phases as in adult dogs but with some important differences:

Faster healing: Most puppies progress through recovery phases more quickly than adult dogs.

More energy management required: Puppies' natural energy levels significantly exceed what the healing false joint can handle in the early weeks. Strict confinement and controlled exercise are more challenging in puppies than in older dogs.

Rapid muscle development: With appropriate rehabilitation, puppies rebuild muscle mass quickly. Physical therapy and controlled activity are essential to channel this recovery effectively.

Typical puppy timeline:

• Weeks 1 to 2: Toe-touching and light weight-bearing
• Weeks 3 to 6: Progressive controlled walking; sit-to-stands and basic exercises
• Weeks 6 to 12: Return to more normal activity with vet guidance

For the full recovery expectations by phase, see recovery expectations for puppies.

Frequently asked questions

My puppy is 4 months old and just diagnosed with hip dysplasia. Should they have FHO?

At 4 months, JPS may still be an option depending on the puppy's age (under 20 weeks) and the degree of joint laxity versus damage. DPO/TPO may also be appropriate if arthritis is minimal. Before considering FHO, your vet or a veterinary orthopedic surgeon should assess whether a preventive procedure is still feasible. If it is, that's generally the preferred path for a very young puppy.

My 7-month-old Chihuahua has Legg-Calvé-Perthes. Is FHO appropriate?

Yes. FHO is the standard treatment for Legg-Calvé-Perthes disease in small breeds. At 7 months, the deteriorating femoral head should be removed before secondary changes worsen. Small-breed puppies like Chihuahuas typically achieve excellent FHO outcomes. Consult your vet promptly to schedule the procedure.

Will FHO affect my puppy's long-term development?

FHO does not negatively affect overall growth or development. The false joint forms as the puppy grows, and most puppies adapt extremely well. The main consideration for large breeds is that the false joint must support a heavier adult body; in small breeds, this is not a meaningful concern.

Puppies with hip dysplasia deserve treatment as much as adult dogs do. The advantage of being young is that the body is highly adaptive and recovery is often faster and more complete. The key is choosing the right procedure for the puppy's age, size, and joint condition, which sometimes means FHO and sometimes means taking advantage of a preventive window that won't be available forever.

Resources

• American College of Veterinary Surgeons. Canine Hip Dysplasia. acvs.org
• PetMD. Hip Dysplasia Surgery in Dogs. petmd.com
• Top Dog Health. Femoral Head Osteotomy for Dogs. topdoghealth.com
• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com

Knowing what to expect at each stage of FHO recovery helps you stay on track, recognize when something's off, and avoid the two most common owner mistakes: doing too much too soon, or doing too little for too long.

FHO recovery is typically 8 to 12 weeks to functional recovery, and 3 to 6 months to full activity. Each phase has a specific focus and specific restrictions.

Quick answer: FHO recovery follows a four-phase progression: days 1 to 7 (pain control and early movement), weeks 1 to 4 (controlled walking and early strengthening), weeks 4 to 8 (progressive rehabilitation), and weeks 8 to 12+ (return to activity). Most dogs begin toe-touching within the first week and return to comfortable walking by weeks 6 to 8. Full running and jumping is typically cleared at 10 to 12 weeks.

Key takeaways

• Days 1 to 7: pain control and passive exercises are the priority. No free movement.
• Week 1 to 2: toe-touching expected. No weight-bearing by week 3 warrants a vet call.
• Weeks 2 to 6: leash walks increase by 5 minutes per week. Sit-to-stands begin.
• Weeks 4 to 8: hydrotherapy and hill walking introduced. False joint is actively maturing.
• Weeks 8 to 12: progressive return to normal activity. Off-leash cleared by vet only.
• Full running and jumping: 10 to 12 weeks minimum. Earlier risks muscular or joint injury.

Before you come home: preparation

Set up the recovery space before surgery day so it's ready when you arrive home.

Checklist:

• Crate or blocked-off small room with non-slip flooring (yoga mats or rubber-backed rugs)
• Ground-level bedding that doesn't require climbing
• Baby gates at the top and bottom of all stairs
• Water and food bowls accessible without stretching
• E-collar sized and fitted (confirm it extends past the nose tip)
• Ice packs or gel packs available for the first week
• All medications picked up from the pharmacy or vet

Days 1 to 7: early recovery

What's happening in the body

The incision is healing. Inflammation is at its peak in the first 2 to 3 days. The femoral shaft is held in position primarily by the surrounding muscles, as the fibrous false joint has not yet formed.

What to do

Pain medication: Give on schedule. Never skip.

Icing: Apply to the surgery site 2 to 4 times daily for 15 to 20 minutes. Wrap the ice pack in a light cloth. Don't apply ice directly to the skin.

Confinement: Crate or small room. Leash for all outdoor time. Carry the dog if stairs can't be avoided.

Passive range-of-motion (PROM): Begin within days 1 to 3 as instructed by your vet. 10 to 15 gentle flexion-extension cycles, 2 to 3 sessions daily.

Leash walks: Short trips for bathroom only. 5 to 10 minutes maximum. Slow pace on flat ground.

What's normal

• Sleeping most of the day
• Reduced or absent appetite for 1 to 3 days
• Holding the leg up or barely touching it to the ground
• Mild swelling at the incision
• Low energy

Milestone by end of week 1

The dog should be showing at least occasional toe-touching on the operated leg. Complete non-use of the leg beyond day 5 to 7 warrants a call to your vet.

Weeks 1 to 4: controlled walking and early strengthening

What's happening in the body

The false joint is beginning to form as fibrous tissue fills the space where the femoral head was removed. Muscle atrophy from the pre-surgical lameness period is significant. The incision heals and closes, typically by days 10 to 14.

What changes at weeks 1 to 2

• Leash walks increase to 10 to 15 minutes, 2 to 3 times daily
• Sit-to-stands begin: 5 repetitions, 2 to 3 times daily
• PROM continues: maintain daily sessions through weeks 1 to 4
• Suture removal at 10 to 14 days (first vet recheck)

Weeks 2 to 4

• Walk duration increases by 5 minutes per week: targeting 15 to 20 minutes per walk by week 4
• Sit-to-stands increase from 5 to 10 repetitions per session
• Gentle thigh massage 3 to 5 minutes once or twice daily
• Hydrotherapy may begin after suture removal if a facility is accessible

What's normal

• Limping on the operated leg during walking is expected throughout this phase
• Improvement should be visible week over week, though gradual
• Some swelling may persist in the thigh for 2 to 3 weeks
• The dog should be bearing weight on the leg regularly by week 3

Milestone by end of week 4

The dog should be walking with regular weight-bearing on the operated leg, even if limping. Leash walking at 15 to 20 minutes without worsening lameness post-walk. If the dog is still not bearing weight consistently, contact your vet.

For the care required at each stage of this period, see care required at each recovery stage.

Weeks 4 to 8: progressive rehabilitation

What's happening in the body

The false joint is actively maturing. Fibrous scar tissue is filling in and becoming more organized. Muscle mass is beginning to rebuild as the dog uses the leg more consistently. Range of motion in the hip is improving.

What changes at weeks 4 to 6

• Leash walks extend to 20 to 30 minutes, 2 to 3 times daily
• Gentle uphill walking introduced (gradual incline; not steep hills)
• Hydrotherapy: 2 to 3 sessions per week if available
• Balance exercises introduced: balance disc, cavaletti poles

Weeks 6 to 8

• Post-operative recheck with your vet, typically including reassessment of gait and hip function
• If the recheck is clear: supervised off-leash activity in a small, enclosed area may be permitted for short periods
• Walk duration continues to increase
• Sit-to-stands continue at 10 repetitions, 2 to 3 times daily

What's normal

• Noticeable improvement in gait quality compared to weeks 1 to 4
• The dog may start initiating use of the leg without prompting
• Some residual limping is still normal, especially after more active sessions
• Thigh muscle asymmetry (operated side smaller than non-operated side) is normal; this resolves with continued rehabilitation

Milestone by end of week 8

Most dogs are walking with consistent, reliable weight-bearing. Gait may still not be perfectly even, but the dog is using the leg as a matter of course rather than avoiding it. The 6 to 8 week recheck should show meaningful functional improvement.

For the physical therapy exercises that drive this phase, see physical therapy during the recovery timeline.

Weeks 8 to 12+: return to activity

What's happening in the body

The false joint is substantially mature. Muscle mass is rebuilding progressively. The dog's movement patterns are adapting to the new hip anatomy. Gait improvement continues as muscle strength increases.

What changes at weeks 8 to 12

• Walk duration reaches 30 to 40 minutes as tolerated
• Brief, supervised off-leash activity in secure areas is often appropriate if the 8-week recheck was positive
• Running and jumping remain restricted until specific vet clearance (typically 10 to 12 weeks at minimum)
• Hydrotherapy continues if available and beneficial

At 10 to 12 weeks

For most dogs, restrictions are fully lifted between 10 and 12 weeks post-surgery following a vet assessment confirming:

• Consistent full weight-bearing
• Good hip range of motion
• Adequate muscle mass on the operated side
• No pain on hip palpation

After 12 weeks

Some dogs, particularly large breeds or those with delayed recovery, benefit from continued structured rehabilitation beyond 12 weeks. Full muscle symmetry and the best possible gait quality may take 4 to 6 months of ongoing appropriate exercise.

For how the timeline extends in complicated cases, see complications that can extend the timeline.

Recovery timeline at a glance

When recovery is slower than expected

Some dogs take longer than the standard timeline. Factors that extend recovery:

• Large body size (more load on the false joint, slower muscle compensation)
• Pre-surgical muscle atrophy (severe atrophy before surgery means more to rebuild)
• Delayed start to rehabilitation
• Inadequate pain management in the early phase
• Complications such as infection or excessive scar tissue

A dog who is not progressing at the expected rate should be reassessed by a vet. The most common corrections are adjustments to pain management, referral to a certified canine rehabilitation therapist, or hydrotherapy.

For diet management that supports this timeline at every phase, see diet management during the recovery period.

For what to expect throughout the full recovery experience, see what to expect throughout recovery.

Frequently asked questions

My dog is walking normally at week 4. Can I let them off the leash?

No. Looking normal at week 4 doesn't mean the false joint is mature or the muscles are strong enough for uncontrolled activity. Running and direction changes at week 4 can damage the still-forming fibrous tissue and cause a setback. Continue with the structured timeline regardless of how the dog appears.

My dog refuses to use the leg at all after week 2. Is that a problem?

Yes. Consistent non-use of the leg beyond week 2 to 3 suggests either inadequate pain control or another issue. Contact your vet. The dog needs to use the leg for the false joint to form correctly. If pain is preventing this, additional pain management options exist.

When can my dog swim freely in a lake or pool?

Free swimming is typically permitted around 8 to 10 weeks after the incision is fully healed and the vet has cleared more active exercise. Controlled hydrotherapy (underwater treadmill) can begin after suture removal at 10 to 14 days. Unsupervised swimming in open water is a later-stage activity.

How do I know if my dog is doing too much?

The main signal is increased lameness after activity that doesn't resolve within 30 to 60 minutes. If your dog was walking well before a session and limping more afterward, reduce the session duration and intensity for the following week.

The FHO recovery timeline is not a test of your dog's toughness. It's a biological process with its own schedule. The false joint forms over weeks. Muscle mass rebuilds over months. Your role is to keep the process moving forward without outrunning it. Measured, consistent, patient progress produces better outcomes than either pushing hard or holding back.

Resources

• Animal Clinic of Billings. FHO Rear Limb Dog Surgery: Post-Operative Rehabilitation Protocol. animalclinicofbillings.com
• VSX Veterinary Surgery. Femoral Head and Neck Ostectomy. vsxvet.com
• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com