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

The cost question comes early in the FHO conversation, and it deserves a clear answer before you get too far into the planning.

The good news is that FHO is one of the more accessible orthopedic procedures financially. The full picture is somewhat more nuanced than the base surgical fee suggests.

Quick answer: FHO surgery costs $1,200 to $2,500 per hip on average in the United States, according to multiple sources reviewed in 2025. Forbes Advisor cites a range of $1,500 to $5,000 for more complex cases. Total cost including pre-surgical workup, medications, and follow-up care typically adds $500 to $1,500 above the surgical fee. Bilateral cases roughly double the cost.

Key takeaways

• Average range is $1,200 to $2,500 per hip for most cases in the US.
• Larger dogs cost more: more anesthesia, longer procedures, higher implant supply costs.
• Specialist surgeons charge more but bring expertise that can reduce complication risk.
• Bilateral FHO roughly doubles the total cost, though some facilities offer staging discounts.
• Post-op costs add $500 to $1,500 in medications, rechecks, and physical therapy.
• Pet insurance can significantly offset costs when policy is in place before diagnosis.
• FHO costs 4 to 6 times less than THR for owners weighing their surgical options.

The national cost range

Multiple veterinary cost databases and specialist sources reviewed in 2025 report the following for FHO:

The variation across sources reflects the range of factors that affect the final bill. No single number applies to all dogs, all facilities, or all geographic regions.

What's included in the quoted price

When your vet gives you an FHO estimate, ask exactly what it covers. Estimates vary significantly in what they include or exclude.

Typically included:

• Anesthesia and monitoring
• The surgical procedure
• Initial post-operative pain medication (usually 5 to 10 days)
• One or two immediate post-operative rechecks

Often not included:

• Pre-surgical bloodwork and radiographs ($150 to $400)
• Specialist consultation fee if referred
• Extended pain medication if needed beyond the initial supply
• Physical therapy or hydrotherapy sessions
• Additional rechecks beyond the initial post-op visits
• Any revision procedure if a complication occurs

Always ask for an itemized estimate and clarify what additional costs to expect before committing.

Factors that affect FHO cost

Dog size

Larger dogs require higher doses of anesthesia, longer monitoring periods, and more surgical supplies. The procedure itself takes longer in a large dog because there is more tissue to work through and the bones are proportionally larger.

A FHO in a 10 lb Chihuahua takes less time, uses less anesthesia, and requires less material than a FHO in a 65 lb German Shepherd. The cost difference can be several hundred dollars.

General practitioner vs. specialist surgeon

Not all FHO surgery is performed by the same type of surgeon.

General practitioners with orthopedic experience: Less expensive. Appropriate for uncomplicated FHO in small dogs.

Board-certified veterinary surgeons (DACVS): More expensive. Appropriate for complex cases, large breeds, or when the owner wants the highest level of surgical expertise and access to advanced equipment.

Forbes Advisor notes that who performs the surgery is one of the key cost variables. Specialist fees add to the total but may reduce complication risk in challenging cases.

Geographic location

Veterinary costs vary by region. Urban practices in high cost-of-living areas (California, New York, Seattle) charge substantially more than rural practices for equivalent procedures. The same FHO that costs $1,500 in a mid-sized Midwestern city may cost $2,500 or more in a major metropolitan area.

Unilateral vs. bilateral

If both hips require FHO, the total cost reflects two separate procedures. Most surgeons stage bilateral FHO (one hip at a time with a recovery period between), which means two separate surgical fees. Some practices offer a reduction when the second procedure is booked at the same facility.

Bilateral total estimates:

• Staged bilateral FHO: $2,400 to $5,000 total across both procedures
• Same-session bilateral FHO (less common): may be slightly reduced from the sum of two separate fees

Complexity of the case

A straightforward FHO for hip dysplasia in a small dog is simpler than FHO following traumatic hip fracture, Legg-Calvé-Perthes disease with significant bone deformity, or chronic luxation with secondary tissue changes. More complex presentations take longer, require more preparation, and cost more.

How FHO cost compares to other hip procedures

When making the surgical decision, understanding the cost hierarchy helps:

FHO is consistently the most affordable of the major surgical options. For owners for whom THR is financially out of reach, FHO provides genuine surgical pain relief at a fraction of the cost.

For the success rates that justify the FHO cost, see the success rates that justify the cost. For a direct cost comparison with THR, see how FHO cost compares to THR.

Post-operative cost: what owners often underestimate

The surgical fee is only part of the total expense. Post-operative care adds meaningfully to the total.

A realistic post-operative care budget for a 3-month recovery is $500 to $1,500, more if regular physical therapy is used. FHO outcomes are directly dependent on rehabilitation, so the physical therapy investment often pays for itself in faster, more complete recovery.

Financial planning options

Get an itemized written estimate

Request a detailed estimate before agreeing to surgery. This protects you from unexpected additions and allows you to compare fairly across multiple practices.

Payment plans and financing

Many veterinary practices work with third-party financing services:

• CareCredit: Widely accepted at veterinary practices; some plans offer 0% interest for a promotional period
• Scratchpay: Veterinary-specific financing with flexible terms
• In-house payment plans: Some practices offer their own installment arrangements

Ask about financing options early in the process, as approval and setup may take a few days.

Pet insurance

Pet insurance is most valuable when it's in place before the diagnosis is made. Most policies exclude pre-existing conditions. If your dog has not yet been diagnosed with hip disease, insurance obtained now may cover future FHO and related costs.

Check your policy for:

• Coverage of hereditary or congenital conditions (hip dysplasia is often hereditary)
• Orthopedic procedure exclusions
• Annual limits and lifetime caps
• Deductible and reimbursement percentage

The cost of not treating

For dogs in significant hip pain, the cost calculation isn't just surgery vs. no surgery. It's also:

• Ongoing long-term pain medication costs (NSAIDs, gabapentin, supplements)
• Increasing veterinary visits as the condition worsens
• Progressive joint damage that makes eventual surgery more complex and expensive
• Reduced quality of life and potential welfare concerns

For dogs whose conservative management costs are accumulating without adequate pain control, FHO may compare more favorably financially over a 2 to 3 year horizon than continued escalating medical management.

For lower-cost non-surgical alternatives that may be appropriate first, see lower-cost alternatives to consider.

For an overview of the procedure you're paying for, see what the procedure involves.

Frequently asked questions

Is FHO covered by pet insurance?

It depends on your policy. Coverage is most likely when the policy was in place before the diagnosis and when the policy covers hereditary or developmental conditions. Contact your insurer before scheduling surgery to confirm coverage, expected reimbursement, and any pre-authorization requirements.

Why is the quoted cost sometimes higher than the average range?

Location, surgeon type, dog size, and case complexity all push costs above the average. A large-breed dog with a complex FHO at a specialty center in a high cost-of-living city might be at $3,000 to $4,000 before post-op care. This is not unusual; it's the upper end of the real range for complex cases.

Should I choose a cheaper general vet over a specialist to save money?

For straightforward FHO in a small dog, a general vet with orthopedic experience is often appropriate. For large breeds, complex presentations, or cases where multiple hip conditions are involved, a board-certified surgeon's expertise is worth the additional cost. Ask about the surgeon's specific FHO experience and complication rates before deciding.

FHO is among the most financially accessible major orthopedic surgeries in small animal veterinary medicine. Understanding the full cost, not just the surgical fee but the pre-operative workup and post-operative rehabilitation as well, puts you in a better position to plan, compare quotes accurately, and make a decision that matches both your dog's needs and your financial reality.

Resources

• Forbes Advisor. How Much Does FHO Surgery for Dogs Cost? (2025). forbes.com
• Vety. How Much Does FHO Surgery Cost For Dogs? (2026). vety.com
• Spot Pet Insurance. How Much Does FHO Surgery for Dogs Cost? spotpet.com
• Lemonade Pet Insurance. A Comprehensive Look at the Costs of Hip Dysplasia Surgery for Dogs. lemonade.com

FHO surgery is generally safe and well-tolerated, but complications do occur. Knowing what to watch for, how to recognize a problem early, and how serious each type of complication actually is helps you respond appropriately without either missing a real problem or panicking over normal post-surgical healing.

Quick answer: The most common FHO complications are muscle atrophy from insufficient rehabilitation, reduced range of motion from excessive scar tissue, and persistent lameness. Less common but important complications include surgical site infection and sciatic nerve irritation. Major complications requiring surgical intervention occur in approximately 13% of cases, based on the JAVMA 2025 study. Most complications are manageable with early recognition and appropriate response.

Key takeaways

• Muscle atrophy is the most preventable complication: it results from inadequate rehabilitation.
• Persistent lameness beyond 3 to 4 months should be evaluated; it may indicate inadequate muscle development or residual bone contact.
• Infection is uncommon but serious: spreading redness, discharge, or fever require same-day vet contact.
• Sciatic nerve injury is rare but produces a distinctive knuckling or dragging of the paw.
• Bone spur development can cause recurring bone-on-bone contact and may require revision surgery.
• JAVMA 2025: 33.8% minor complications, 13.2% major, 4.4% surgical revision in 68 FHO cases.

Published complication rates: what the research shows

The JAVMA 2025 retrospective study of 68 FHO cases across four hospitals provides the most current complication data:

• Minor complications (no additional surgery or medications required): 33.8% of cases, including persistent lameness not requiring additional pain medication (17 cases), incisional irritation (2), anxiety (2), seroma (1), and persistent resistance to limb extension (1)
• Major complications requiring intervention: 13.2% of cases, including GI upset (3 cases), infection (1), persistent lameness requiring additional pain medications (2), and surgical revision (3)
• Surgical revision required: 4.4% of cases; all three revision cases involved bony contact from bone spur development

Top Dog Health summarizes the most common complications across the literature: "decreased range of motion and mobility in the leg, muscle atrophy, loss of function, limb shortening, and infection."

Complication 1: Muscle atrophy

What it is

Muscle atrophy is the loss of muscle mass in the thigh and hip region of the operated leg due to reduced use. Some degree of muscle atrophy before surgery (from the pain-related period) and immediately after surgery (from rest) is expected. The complication is when muscle loss is excessive or fails to reverse with rehabilitation.

Why it happens

• Inadequate or delayed rehabilitation after surgery
• Insufficient pain control preventing the dog from using the leg
• Owner non-compliance with exercise protocol
• Pre-existing severe atrophy before surgery that wasn't addressed

What you'll see

• Visible asymmetry: operated thigh is noticeably smaller or thinner than the other side
• The dog consistently avoids the leg even after the expected recovery period
• Reduced confidence using the leg on uneven ground or during transitions

What to do

Muscle atrophy after FHO responds to structured rehabilitation. Begin or intensify the following:

• Controlled leash walking: slow, on flat ground, at a pace that encourages the dog to bear weight on the leg
• Sit-to-stands: the most targeted exercise for the hip extensors and quadriceps
• Hydrotherapy (underwater treadmill): rebuilds muscle without joint loading
• Consistent daily effort for several weeks

If significant atrophy persists despite 4 to 6 weeks of consistent rehabilitation, consult a certified canine rehabilitation therapist for a structured program.

For how rehabilitation directly addresses and prevents muscle atrophy, see post-op care that reduces complications.

Complication 2: Reduced range of motion / scar tissue stiffness

What it is

Scar tissue naturally forms as the false joint develops. If this scar tissue forms excessively or in a restrictive pattern, it can limit how far the hip can flex and extend. The result is a stiff gait, difficulty sitting fully, and reduced hip extension during walking.

Why it happens

• Insufficient movement during the early recovery phase
• The false joint forms tightly due to inadequate early range-of-motion exercises
• Large dogs may be more prone due to the greater forces involved in false joint formation

What you'll see

• The dog's operated leg appears stiff during walking
• The dog has trouble sitting squarely
• On observation, the hip doesn't extend fully during trotting
• Resistance when the leg is gently extended

What to do

• Passive range-of-motion (PROM) exercises should begin within the first 1 to 3 days post-surgery to prevent this
• If stiffness develops, intensive PROM, gentle stretching, and hydrotherapy are the primary interventions
• Laser therapy at a rehabilitation facility can help reduce scar tissue density
• If range of motion stays limited beyond 8 to 10 weeks, a referral to a certified canine rehabilitation therapist is appropriate

Complication 3: Persistent lameness

What it is

Mild limping in the first 2 to 4 weeks is expected. Persistent lameness beyond 4 to 6 months, or lameness that worsens after a period of improvement, is a complication.

Causes

• Inadequate muscle development (the most common cause)
• Residual bone contact from incomplete femoral neck removal
• Bone spur development causing secondary bone contact (as seen in the JAVMA 2025 revision cases)
• Pain from adjacent joint disease developing due to compensation patterns

What you'll see

• Consistent limping or shortened stride on the operated leg beyond the expected recovery period
• Worsening lameness after a period of apparent improvement
• The dog avoids loading the operated leg in activities like going upstairs

What to do

• A vet assessment with radiographs is the appropriate response to persistent lameness
• Radiographs can identify whether bone contact is occurring from residual neck bone or bone spur formation
• If no bony issue is identified, intensify rehabilitation targeting the hip extensors
• If bone contact is confirmed, surgical revision may be needed (as in the 4.4% of JAVMA cases)

For how complications affect the recovery timeline, see how complications affect the recovery timeline.

Complication 4: Surgical site infection

What it is

Infection at the FHO incision site. This is an uncommon complication but requires prompt attention when it occurs.

Why it happens

• Licking the incision (most common cause): introduces bacteria directly into the healing wound
• Environmental contamination of the incision site (walking through dirty water, rolling in grass)
• Systemic factors reducing immune response

What you'll see

Early infection signs:

• Redness extending beyond the incision edges
• Increased heat around the incision
• Yellow, green, or creamy discharge from the incision
• Foul odor from the wound or bandage
• The dog's interest in the incision increases

Systemic signs of deeper infection:

• Fever
• Lethargy
• Reduced appetite
• Marked worsening of lameness

What to do

Contact your vet the same day if you see any of these signs. Superficial infection is treated with antibiotics and local wound care. Deeper infections may require more intensive treatment. Do not wait to see if it resolves on its own.

Prevention: The E-collar must be worn at all times when you can't directly supervise your dog. This is the single most effective infection prevention step in your control.

Complication 5: Sciatic nerve injury

What it is

The sciatic nerve runs near the hip joint and can be affected during or after FHO surgery. Sciatic nerve injury is rare but serious. PetMD notes: "Other risks include infection of the surgical site and damage to the sciatic nerve, which runs near the hip joint."

Why it happens

• Surgical trauma to the nerve during the procedure (uncommon with experienced surgeons)
• Post-operative inflammation or swelling pressing on the nerve
• Scar tissue formation affecting nerve function during healing

What you'll see

• Knuckling: the dog places the top of the paw on the ground rather than the pads (the paw is folded under)
• Dragging: the dog drags the paw during walking
• Reduced withdrawal reflex: reduced or absent response when the paw is pinched
• Muscle weakness: more pronounced than expected for the recovery phase

What to do

Sciatic nerve signs warrant same-day veterinary assessment. Mild cases (from post-operative inflammation) often resolve with time and anti-inflammatory medication. More significant injuries require neurological assessment. Protective paw boots can prevent abrasion to a knuckling limb while recovery is ongoing.

Complication 6: Seroma

What it is

A seroma is a pocket of sterile fluid that accumulates under the skin near the incision. It appears as a soft, fluctuating swelling beneath the incision site.

Why it happens

• Normal response to surgical tissue disruption
• Excessive activity in the early recovery period increasing fluid production
• Inadequate rest

What you'll see

• Soft, puffy swelling near or below the incision
• Not particularly hot or painful to the touch
• No discharge or odor (distinguishes it from infection)
• Typically appears in the first 1 to 2 weeks

What to do

Most seromas are monitored rather than immediately treated. Strict rest reduces fluid production. Contact your vet to confirm the diagnosis. If the seroma is large, under significant tension, or if you're unsure whether it's a seroma or infection, veterinary assessment is appropriate.

Complication 7: Gastrointestinal upset

The JAVMA 2025 study found GI upset as the most common major complication (3 of 9 major complication cases). Post-surgical GI upset in dogs is typically related to:

• NSAIDs given without food (can irritate the gastric mucosa)
• Anesthesia effects on gut motility
• Stress-related gut changes in the perioperative period

Prevention: Always give NSAIDs with food. A bland diet for the first few days post-surgery reduces GI stress. If vomiting or diarrhea occurs after starting post-operative medications, contact your vet: a different medication protocol or temporary medication adjustment may be needed.

For how complications compare to normal recovery expectations, see normal expectations vs complications.

Complication recognition: quick reference

For guidance on cases where complication risk is considered in the recommendation framework, see cases where complication risk is considered.

For how post-surgical care directly reduces complication risk, see how complications affect success rates.

Frequently asked questions

My dog is limping at week 6. Is this a complication?

Some limping at week 6 is still within the expected recovery range, particularly in large breeds or dogs with pre-existing muscle atrophy. If the lameness is clearly improving week over week, it may not be a complication. If it has plateaued or worsened, a vet assessment is appropriate.

Is it normal for the operated area to feel warm for several weeks?

Some warmth at the surgical site in the first 1 to 2 weeks is normal tissue healing. Warmth that persists beyond 2 to 3 weeks, or that increases after a period of improvement, is worth checking. This could indicate ongoing inflammation, infection, or other issues.

My dog's paw seems to fold under when walking. Should I be worried?

Yes, this warrants same-day veterinary attention. Knuckling (paw folding under) can indicate sciatic nerve involvement. It can also reflect neurological problems unrelated to the surgery. Either way, it needs professional evaluation.

Complications after FHO are real, and some are serious. But most are recognizable early, and most respond well to prompt attention. The combination of daily incision monitoring, consistent rehabilitation, adequate pain control, and E-collar compliance addresses the majority of complication risk directly. Know what to watch for, and don't hesitate to contact your vet when something looks wrong.

Resources

• JAVMA. Acute vs. chronic coxofemoral disease: FHO complications and outcomes. avmajournals.avma.org
• Top Dog Health. Femoral Head Osteotomy for Dogs. topdoghealth.com
• PetMD. Femoral Head Ostectomy in Dogs and Cats. petmd.com

Hip pain in dogs is rarely sudden and obvious. It builds gradually, and the signs are easy to miss or misread as normal aging, stiffness, or mood changes.

Knowing what to look for, and understanding which signs suggest the joint damage has progressed to the point where surgery deserves serious consideration, helps you act before your dog's condition deteriorates further.

Quick answer: The signs that may indicate a dog needs FHO surgery include persistent limping that doesn't improve with medication, difficulty rising or lying down, reluctance to exercise or climb stairs, visible muscle wasting in the hindquarters, and joint pain or restricted range of motion on examination. These signs become more urgent when conservative management has been tried and has stopped providing adequate relief.

Key takeaways

• Persistent limping that doesn't improve with rest or medication is the clearest signal to escalate evaluation.
• Difficulty rising or lying down reflects chronic hip pain affecting the most basic daily movements.
• A bunny-hopping gait in the rear legs often signals bilateral hip involvement.
• Muscle wasting in the thigh indicates the dog has been avoiding the leg for a significant period.
• Reduced range of motion in the hip on physical examination is a key diagnostic finding.
• Failure to respond to conservative management is often the deciding factor for FHO recommendation.

Why signs matter as much as diagnosis

A diagnosis of hip dysplasia, Legg-Calvé-Perthes disease, or hip fracture tells you what's structurally wrong. The signs your dog shows tell you how much that structural problem is affecting their daily life.

FHO is not recommended purely on the basis of a radiographic finding. Two dogs with identical X-rays can have very different quality-of-life impacts. The decision to recommend FHO is made when the clinical signs, the physical examination findings, and the response to non-surgical management together indicate that conservative care is no longer adequate.

For the conditions that most commonly lead to an FHO recommendation, see hip dysplasia as a common cause.

For a full explanation of what FHO surgery involves and how the false joint forms, see what FHO surgery is.

Behavioral signs to watch at home

Persistent limping or uneven gait

Limping on a hind leg is the most recognizable sign of hip pain. In FHO candidates, this limping is typically:

• Persistent rather than intermittent: The dog limps consistently rather than occasionally
• Not responsive to rest or medication: NSAIDs and rest provide little or no improvement
• Present during and after activity: The dog is stiff getting up and doesn't loosen up reliably with gentle movement

In the early stages of hip disease, limping may be most visible after exercise or when getting up after rest. As the condition progresses, it becomes constant.

Bunny-hopping gait

In dogs with bilateral hip involvement, both rear legs may move together in a hopping motion rather than alternating normally, particularly at speed. This "bunny hop" is a characteristic sign of hip dysplasia that affects both sides.

Difficulty rising or lying down

Dogs with significant hip pain struggle with transitions between resting and standing. Signs include:

• Hesitating before standing up
• Using the front legs to push up while barely engaging the rear end
• Lowering themselves slowly and awkwardly when lying down
• Resting more frequently and for longer periods than usual

These difficulties with position changes reflect the joint pain triggered by hip flexion and extension.

Reluctance to exercise, jump, or climb stairs

Before an obvious limp develops, many dogs quietly begin avoiding activities that load the hip joint. Watch for:

• Slowing down on walks or stopping before the usual distance
• Refusing to jump into the car or onto furniture
• Hesitating at the bottom of stairs or refusing to climb them
• Less engagement with play, toys, or games
• General reduction in activity level or enthusiasm

These behavioral changes are easy to attribute to aging, tiredness, or personality rather than hip pain, especially in dogs who aren't visibly limping. In a dog known to be at risk for hip disease, these signs are worth taking seriously.

Licking or chewing at the hip area

Some dogs lick or chew persistently at the hip region in response to chronic pain. While this behavior has many causes, localized attention to the hip area in a dog with known hip disease is worth mentioning to your vet.

Physical signs you may notice

Visible muscle wasting in the hindquarters

When a dog consistently avoids loading a painful leg, the muscles in that limb begin to atrophy. You may notice:

• One thigh looks visibly thinner than the other
• The dog's rear end appears asymmetric
• The hip bones are more prominent on the affected side due to muscle loss

Muscle wasting (atrophy) in the hip and thigh indicates the dog has been significantly sparing the leg for weeks to months. It's a sign that chronic pain is affecting function, not just comfort.

Sandringham Veterinary Hospital notes: "Muscle wasting in the affected leg is a serious sign that conservative care is no longer enough, and surgical options should be considered."

Change in posture or stance

Dogs with hip pain often compensate by shifting weight forward. You may notice:

• The dog stands with its rear legs closer together than normal
• The back appears more arched or "crouched" at the rear
• The dog takes shorter steps with the rear legs
• The hindquarters swing laterally during walking

These postural compensations reduce load on the hip but indicate meaningful structural pain.

What the vet finds on examination

When your vet examines your dog for hip pain, they are looking for specific findings that support an FHO recommendation.

Pain on hip extension or rotation

The vet will gently manipulate the hip joint, extending and rotating it through its normal range. A dog with hip pain will typically flinch, tense, or vocalize when the affected joint is moved to its end range.

Reduced range of motion

Normal hip joints in dogs have a wide range of extension and flexion. Arthritic or damaged hips have noticeably reduced range of motion. The vet feels resistance well before the end of what should be the normal range.

Crepitus

Crepitus is a grinding or crackling sensation felt through the joint as it moves. It reflects bone-on-bone contact or irregular joint surfaces. It's a sign of significant joint damage.

Physical findings in conjunction with imaging

The physical examination findings are combined with radiographic findings. X-rays assess the degree of joint damage, any femoral head collapse or fracture, the degree of arthritis, and whether the joint is subluxated (partially displaced).

Pet Health Network summarizes: "Decreased tolerance to exercise, stiffness, limping, or bunny hopping are some of the most obvious signs of hip pain. X-rays help confirm the extent of joint damage."

When signs indicate FHO rather than continued conservative management

Not every dog with hip pain needs FHO. The signs that specifically push toward FHO consideration are:

• Failed conservative management: The dog has been on appropriate pain medication, joint supplements, weight management, and physiotherapy for an adequate period and is still in significant pain
• Quality of life clearly impacted: The dog is not engaging in normal daily activities, is reluctant to move, or is visibly distressed
• Progressive worsening despite management: Signs are getting worse over time rather than stable or improving
• Muscle atrophy suggesting chronic disuse: The leg has visibly wasted, indicating prolonged reduced use

For the full criteria that guide the FHO recommendation, see when these signs indicate surgery is needed.

The pros and cons of proceeding once signs are clear

When these signs are present and conservative care has been maximized, the next step is a detailed discussion of FHO as a management option, including its benefits and limitations for your specific dog.

For what that decision involves, including the advantages and realistic limitations of FHO, see pros and cons of proceeding with FHO.

For non-surgical paths that may still be appropriate depending on the clinical picture, see alternatives to consider before FHO.

Frequently asked questions

My dog limps occasionally but seems fine otherwise. Should I be worried?

Occasional limping that resolves quickly may not indicate severe hip disease. However, in at-risk breeds (German Shepherds, Labradors, Golden Retrievers, large breeds generally), even intermittent limping in the hindquarters warrants a vet assessment. A physical examination and radiographs can determine whether hip disease is present and how far along it is.

My dog never cries in pain but the vet says the X-rays look bad. How can that be?

Dogs are stoic. Many dogs with significant radiographic hip disease show minimal obvious distress because they adapt to chronic pain gradually. The absence of crying or obvious distress doesn't mean the dog isn't in significant pain. The behavioral changes described above (reduced activity, reluctance to climb stairs, stiffness after rest) are often more reliable indicators than vocalization.

How do I know if my dog's limping is from the hip and not the knee?

Hip pain typically produces a shortened hindlimb stride, a bunny-hopping gait in bilateral cases, and stiffness on rising that improves slightly with movement. Knee (stifle) problems often cause more abrupt non-weight-bearing or a distinctive one-sided skip. Your vet can localize the source of lameness through a physical examination that assesses each joint individually.

The signs of hip disease in dogs are gradual, cumulative, and easy to underestimate. By the time a dog is clearly struggling, the joint damage may have been building for months or years. Catching the behavioral changes early, reporting them to your vet, and staying consistent with monitoring once a diagnosis is made gives you the best chance of making the right intervention at the right time.

Resources

• Pet Health Network. Dog Hip Surgery: What You Need to Know about FHO. pethealthnetwork.com
• Sandringham Veterinary Hospital. How Do I Know If My Dog Needs a Femoral Head Ostectomy? sandringhamvethospital.com.au
• PetMD. Femoral Head Ostectomy in Dogs and Cats. petmd.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

If your vet has recommended FHO surgery for your dog, the name alone doesn't tell you much. What is actually being removed? What replaces it? Will your dog walk normally again?

This guide explains exactly what FHO surgery is, how the body adapts after the procedure, which dogs benefit most, and what the procedure involves step by step.

Quick answer: FHO (femoral head ostectomy) is the surgical removal of the "ball" portion of your dog's hip joint. By removing the diseased or damaged ball, bone-on-bone pain is eliminated. The dog's body then forms a false joint of scar tissue and muscle that allows comfortable movement. It's most effective in small to medium dogs and is considered a salvage procedure rather than a full joint reconstruction.

Key takeaways

• FHO removes the femoral head and neck: the ball of the ball-and-socket hip joint is permanently taken out.
• A false joint forms after surgery: scar tissue and muscle create a cushioned connection that allows movement.
• Pain relief is the primary goal: eliminating bone-on-bone contact removes the source of chronic hip pain.
• Best results in dogs under 50 lbs: small dogs form the false joint more effectively than large breeds.
• Rehabilitation is essential: early, controlled movement after surgery is critical to a good outcome.
• FHO is a salvage procedure: it's a last-resort approach when the hip joint can't be repaired or replaced.

The anatomy involved: what a normal hip looks like

Your dog's hip is a ball-and-socket joint. The femoral head, the rounded top of the thigh bone (femur), sits inside the acetabulum, a cup-shaped socket in the pelvis.

In a healthy hip:

• The femoral head is covered in smooth cartilage
• It fits snugly inside the acetabulum
• Movement is smooth and pain-free
• Ligaments and the joint capsule hold everything in place

When this system breaks down, due to hip dysplasia, fracture, Legg-Calvé-Perthes disease, or severe arthritis, the ball and socket grind painfully against each other with every step. This is the pain FHO is designed to eliminate.

What FHO surgery actually does

FHO removes the femoral head and neck entirely. What remains is the shaft of the femur and an empty acetabulum (socket) with no ball inside it.

According to VCA Animal Hospitals: "This removes the ball of the ball-and-socket joint, leaving just an empty socket. The muscles of the leg will initially hold the femur in place and, over time, scar tissue will form between the acetabulum and the femur to provide cushioning."

This cushioning layer of fibrous tissue is called a pseudarthrosis or false joint. It doesn't look like a normal hip joint on X-ray and it doesn't function exactly like one, but in most small to medium dogs it provides enough stability and padding for pain-free daily movement.

FHO is also known as FHNE (femoral head and neck excision). You may hear both terms used interchangeably.

What conditions lead to FHO

FHO is used when the hip joint is beyond repair or replacement due to the dog's size, finances, health status, or the specific nature of the joint damage. Common indications include:

Hip dysplasia: The most common indication. In dogs with severe hip dysplasia where conservative management has failed and THR is not feasible, FHO removes the source of pain.

Femoral head or neck fractures: Traumatic fractures that can't be repaired internally are often best managed with FHO, particularly in small dogs.

Legg-Calvé-Perthes disease: A condition of the juvenile hip where the femoral head loses blood supply and begins to collapse. Common in small breeds under 25 lbs. FHO removes the deteriorating bone and resolves the pain.

Coxofemoral luxation: A dislocated hip that cannot be maintained in position by closed reduction or internal fixation is sometimes managed with FHO.

Severe osteoarthritis: End-stage hip arthritis causing pain that can't be controlled with medication in a dog who isn't a THR candidate.

For the signs that indicate your dog may need this surgery, see signs your dog may need FHO.

Understanding when FHO is the right recommendation rather than other options is closely tied to the specific clinical situation. For the full criteria that guide the FHO recommendation, see when FHO surgery is recommended.

The procedure: what happens during FHO surgery

FHO is performed under general anesthesia. The steps:

1. Pre-surgical evaluation: Bloodwork, radiographs, and a physical exam confirm the dog is a suitable surgical candidate and that anesthesia is safe.

2. Positioning: The dog is positioned on their side with the affected hip facing up.

3. Incision: A cut is made along the side of the thigh, over the hip joint. Muscles in the area are gently moved aside to access the joint.

4. Joint capsule entry: The surgeon opens the hip joint capsule and deliberately luxates (dislocates) the hip to expose the femoral head and neck.

5. Bone removal: Using a bone saw or osteotome, the femoral head and neck are removed cleanly. The cut is made at the base of the neck to remove the entire ball and leave a smooth, flat surface.

6. Closure: The joint capsule and surrounding soft tissues are sutured closed. Skin is closed with sutures or staples. The procedure typically takes 1 to 2 hours.

According to PetMD: "By removing the femoral head and neck, bone-on-bone pain within the hip joint is reduced or eliminated."

How the false joint forms

After surgery, the femoral shaft floats free in the space where the ball once connected to the socket. The surrounding muscles hold the femur loosely in position.

Over the following weeks to months, the body fills this space with fibrous scar tissue. This scar tissue matures into the false joint. VSX Veterinary Surgery notes: "As the body heals, scar tissue will develop, creating a false joint that is more comfortable and results in better mobility than the diseased joint."

The false joint doesn't form passively. It requires the dog to use the leg after surgery. Controlled early movement is what shapes the scar tissue into a functional, supple cushion rather than a tight, restrictive mass. This is why post-operative rehabilitation, including gentle range-of-motion exercises and early leash walking, is critical.

Which dogs benefit most from FHO

Small to medium dogs (under 45 to 50 lbs)

VCA Animal Hospitals notes: "This procedure is primarily recommended for small dogs (under approximately 45 pounds) and cats, especially those who are at a healthy weight. The false joint that is created in an FHO works very well to support the weight of small animals."

In small dogs, the surrounding muscle is strong enough relative to body weight to provide good stability. The false joint functions effectively, and most small dogs return to excellent pain-free movement.

Cats

FHO is very commonly performed in cats for hip dislocation and other hip conditions. Cats form excellent false joints and typically recover well.

Large dogs when THR isn't possible

FHO can be performed in large dogs when total hip replacement is not feasible due to financial constraints, anesthetic risk, or other health factors. Results are less predictable than in small dogs, and residual gait abnormality is more common, but pain relief is still usually achieved.

Top Dog Health notes: "Despite the lack of a normal hip joint following FHO surgery, most dogs do surprisingly well after the procedure, but results can vary depending on the patient's size and post-operative rehabilitation."

How FHO compares to total hip replacement

FHO and THR both treat severe hip conditions but do so very differently:

For the full comparison including long-term outcomes and cost breakdown, see FHO vs total hip replacement comparison.

For information on how much FHO costs, see how much FHO costs.

What to expect after FHO surgery

The recovery from FHO is different from most orthopedic surgeries. Rather than strict crate rest, early controlled movement is encouraged from the first few days post-operatively. The false joint needs movement to form correctly.

General recovery milestones:

• Days 1 to 7: Short leash walks for bathroom trips; passive range-of-motion exercises begin
• Weeks 1 to 4: Gradually increasing leash walk duration; physical therapy exercises introduced
• Weeks 4 to 8: Progressive activity increase; building muscle mass
• Weeks 8 to 16: Most dogs reaching functional recovery

For the complete recovery overview, see what to expect after FHO surgery.

For FHO success rates, see FHO success rates.

Frequently asked questions

Will my dog walk normally after FHO?

Many small dogs return to very comfortable, functional movement after FHO. Whether this looks "normal" depends on muscle development during recovery and the dog's commitment to rehabilitation. Some dogs, particularly large breeds, may have a visible gait difference. Pain relief is almost universally achieved in appropriate candidates.

Is FHO reversible?

No. Once the femoral head and neck are removed, they cannot be returned. If FHO outcomes are unsatisfactory in a large dog, total hip replacement can sometimes be performed afterward, though this is technically challenging. The irreversibility of FHO is one reason proper patient selection matters before proceeding.

How long does the surgery take?

FHO typically takes 1 to 2 hours depending on the dog's size, the specific hip condition, and whether any complications arise during the procedure.

Is FHO painful for dogs?

The surgery is performed under general anesthesia, so your dog feels nothing during the procedure. Post-operative pain is managed with analgesics and anti-inflammatory medication. The goal is for the dog to be comfortable enough to begin gentle movement within days of surgery.

FHO is one of the most counterintuitive procedures in veterinary orthopedics: the solution to a painful joint is to remove the joint entirely and let the body build a replacement from scar tissue. For the right dog, it works remarkably well. Pain relief is the primary outcome, and for a dog who has been suffering through deteriorating hip pain, that change can be dramatic.

Resources

• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com
• PetMD. Femoral Head Ostectomy in Dogs and Cats. petmd.com
• VSX Veterinary Surgery. Femoral Head and Neck Ostectomy. vsxvet.com
• Top Dog Health. Femoral Head Osteotomy (FHO) for Dogs. topdoghealth.com