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

Age alone is not a reason to withhold FHO surgery from a dog in chronic hip pain.

That said, senior dogs do bring specific considerations to the table: anesthetic risk, recovery pace, concurrent health conditions, and realistic expectations about functional outcomes. Understanding those considerations helps you have a clear, informed conversation with your vet about whether FHO is the right choice for your older dog. For a full explanation of what the procedure involves, see what FHO involves.

Quick answer: FHO is a legitimate and often appropriate option for senior dogs with chronic hip pain. The surgery is less invasive than total hip replacement and carries lower anesthetic risk than more complex procedures. The key considerations are: pre-surgical health screening to identify anesthetic risk factors, realistic expectations about recovery pace (slower in older dogs), and commitment to post-surgical rehabilitation. Age alone is not a contraindication.

Key takeaways

• Age alone is not a contraindication for FHO: health status matters more than age.
• FHO carries lower anesthetic risk than THR for senior dogs, making it more accessible for older patients.
• Pre-surgical bloodwork and cardiac screening are essential for senior dogs before any surgery.
• Recovery takes longer in older dogs: expect 3 to 6 months rather than 8 to 12 weeks.
• Pain relief is the primary benefit: even partial functional improvement changes quality of life significantly.
• Alternatives may suit some seniors for whom surgery carries high risk or who respond to conservative care.

Why senior dogs often need hip surgery

Hip dysplasia, hip arthritis, and related conditions don't resolve with age. They typically worsen. A dog who was managing adequately on medication at age 7 may no longer be managing well at age 10 as arthritis progresses and pain management becomes harder.

The question for senior dogs is not whether hip surgery should be considered, but whether the specific risks of surgery in an older dog are outweighed by the ongoing pain and declining quality of life from the untreated condition.

For many senior dogs, the answer is yes. A dog living in chronic hip pain that can no longer be adequately controlled with medication is a dog whose quality of life is meaningfully impaired. Treating that pain through FHO can produce significant improvement in comfort and engagement in daily life, even in older patients.

Anesthetic considerations in senior dogs

Higher baseline risk, but manageable

Senior dogs do carry higher baseline anesthetic risk than young adult dogs. A large-scale study on anesthetic mortality in dogs found the risk during or in the 48 hours after surgery was higher in geriatric dogs (1.8%) than in adult dogs (under 0.5%). However, Parnell (2025) notes: "Thoughtful planning, careful drug selection, and meticulous monitoring can help teams manage geriatric anesthesia safely and effectively."

Maryland Veterinary Surgical Services summarizes the current position: "Advances in veterinary medicine have improved surgical outcomes for senior dogs, allowing many to undergo necessary procedures safely."

Age-related anesthetic risk factors in senior dogs:

• Reduced organ reserve (kidney and liver function)
• Altered drug metabolism (medications clear more slowly)
• Higher prevalence of concurrent conditions (heart disease, diabetes, hypothyroidism)
• Reduced thermoregulatory capacity (more prone to hypothermia during surgery)

FHO's advantage over THR for senior patients

FHO is a significantly simpler and shorter procedure than total hip replacement. This matters for senior dogs because:

• Shorter anesthesia duration reduces cumulative anesthetic exposure
• Less surgical complexity means fewer intraoperative variables
• Lower complication profile compared to implant surgery
• No risk of implant rejection, loosening, or luxation

For many senior dogs, FHO is the most appropriate surgical option partly because it's lower-risk than THR, not just because of cost.

Pre-surgical screening requirements

Before FHO in a senior dog, comprehensive pre-surgical screening is standard and important. Maryland Veterinary Surgical Services recommends: bloodwork to assess organ function, chest X-rays to check for heart or lung issues, ECG to evaluate heart rhythm, and urinalysis to detect kidney or bladder concerns.

This workup:

• Identifies hidden risk factors before surgery, allowing anesthetic protocol modifications
• Guides drug selection and dosing
• Allows the surgical and anesthetic team to prepare for the dog's specific risks
• May identify conditions that need to be stabilized before surgery can safely proceed

For the broader indication framework around when FHO is recommended, including senior dogs as candidates, see when senior dogs are candidates.

Recovery in senior dogs: what's different

Recovery after FHO in a senior dog follows the same phases as in younger dogs, but takes longer.

Typical recovery timeline differences:

• Younger dogs: functional recovery by 8 to 12 weeks
• Senior dogs: functional recovery more commonly at 3 to 6 months
• Full muscle development and gait normalization may take up to 6 to 12 months

Why slower? Several reasons:

• Reduced tissue healing capacity compared to younger dogs
• Pre-existing muscle atrophy from the painful period before surgery
• Possible concurrent joint disease in other limbs (stifles, spine, opposite hip)
• Lower energy and activity tolerance during rehabilitation

What this means for you: The rehabilitation commitment for a senior dog is sustained over a longer period and may require more patience. Daily exercises, measured walking, and hydrotherapy sessions have the same principles as for younger dogs but proceed at a gentler pace.

Florence Animal Hospital notes: "Aging pets benefit significantly from individualized anesthesia and pain control plans, including safe sedation, continuous monitoring, and gentle post-operative care."

Functional expectations for senior dogs

What FHO can realistically deliver for an older dog

The primary and most reliable benefit for senior dogs is pain relief. Eliminating bone-on-bone hip contact removes the source of chronic pain. This benefit is available to senior dogs as much as younger ones.

Functional improvement in gait and activity is also expected, though typically less complete than in younger dogs. Common outcomes:

• Noticeably more comfortable movement and willingness to be active
• Reduced need for daily pain medication
• Better sleep and rest quality (chronic pain disrupts sleep)
• More engagement with family and activities
• Slower and less complete gait normalization compared to younger dogs

For how success rates are affected by age, see how age affects success rates.

What to expect at 6 months and beyond

Many senior dogs achieve their best functional level at 3 to 6 months post-surgery rather than 8 to 12 weeks. The ongoing maintenance of this level depends on:

• Weight management: excess weight accelerates decline in the false joint
• Appropriate ongoing exercise: low-impact walking and swimming maintain the muscle that supports the false joint
• Monitoring for compensatory joint disease in adjacent areas

For the full long-term outcome picture relevant to senior dogs, see pros and cons in the context of older dogs.

When FHO may not be the right choice for a senior dog

Not every senior dog is a good FHO candidate. FHO may not be appropriate when:

• Pre-surgical screening reveals significant organ impairment that makes anesthetic risk unacceptably high
• The dog's concurrent health conditions are unstable
• The dog's overall condition or terminal illness means the recovery commitment won't produce meaningful quality of life improvement
• Conservative management is still adequately controlling pain and quality of life is good

For alternatives that may suit senior dogs better in some circumstances, see alternatives that may suit senior dogs.

Practical questions to bring to your vet

When discussing FHO for your senior dog, ask specifically:

• What does the pre-surgical bloodwork show about anesthetic risk?
• Are there any conditions we need to stabilize before surgery?
• What is your honest expectation for functional recovery in a dog of this age, size, and condition?
• What does realistic long-term maintenance look like if the surgery goes well?
• What are the alternatives, and how does continued conservative management compare in terms of quality of life?

Frequently asked questions

Is there an age limit for FHO surgery?

No. There is no specific age cutoff for FHO. The relevant question is health status, not chronological age. A healthy 12-year-old small dog in good organ condition may be a better surgical candidate than a 9-year-old large dog with cardiac disease. Pre-surgical screening is what determines whether the individual dog is appropriate for surgery, not their age alone.

My senior dog is on long-term NSAIDs for hip pain. Is that better than surgery?

Long-term NSAID use in senior dogs carries its own risks: kidney function decline, GI effects, and potential liver changes. If NSAIDs are no longer adequately controlling pain, or if long-term NSAID use is creating its own health concerns, FHO provides a path to pain relief that may reduce or eliminate the need for long-term medication. This is worth discussing specifically with your vet.

My dog is 13. Is surgery really worth it at that age?

It depends entirely on the dog's health, their current quality of life, and what surgery might realistically deliver. A 13-year-old dog in chronic hip pain whose quality of life is significantly impaired may benefit substantially from FHO and have several more comfortable years ahead. The question your vet will help you answer is whether the risks of the procedure are outweighed by the expected quality-of-life improvement for your specific dog.

Senior dogs in chronic hip pain are not candidates for waiting and hoping things improve on their own. The pain gets worse, not better. The question is whether FHO is a safe and practical path to relief for this particular dog at this particular point. With thorough pre-surgical screening, appropriate anesthetic protocols, and realistic expectations about a longer recovery, FHO is a legitimate option for many older dogs that can genuinely change the quality of their remaining years.

Resources

• Parnell. Geriatric Anesthesia: Clinical Considerations for Senior Dogs. parnell.com
• Maryland Veterinary Surgical Services. Senior Dogs and Surgery: Special Considerations. mdvss.com
• Florence Animal Hospital. Is Surgery Safe for Elderly Dogs? florenceah.com

FHO isn't the first response to a hip problem. It's typically the response after other options have been tried and found insufficient.

Understanding exactly what has to be true before FHO becomes the recommended path helps you recognize when the conversation with your vet is heading in that direction and why.

Quick answer: FHO is recommended when hip pain cannot be adequately controlled through conservative management (medication, weight control, physiotherapy), and when the underlying condition is one that FHO reliably addresses. The primary indications are hip dysplasia with established pain, femoral head fractures, Legg-Calvé-Perthes disease, chronic hip luxation, and severe end-stage hip arthritis. It's recommended for small to medium dogs primarily, and for large dogs when THR isn't feasible.

Key takeaways

• FHO is a salvage procedure: it's recommended when other treatments have failed or aren't appropriate.
• Failed conservative management is the most common trigger for the FHO recommendation.
• Hip dysplasia is the most frequent underlying condition that leads to FHO in dogs.
• Legg-Calvé-Perthes disease is a specific FHO indication in small breeds, often young dogs.
• Irreparable fractures of the femoral head or neck are a clear indication for FHO.
• Age, size, health status, and budget all shape whether FHO or another option is recommended.

The overarching principle: when pain can't be managed any other way

Dallas Veterinary Surgical Center defines the FHO indication clearly: "The FHO procedure should be considered when there is pain and lameness of the hip that cannot be alleviated by pain medication, weight loss, non-surgical, and/or other surgical procedures."

This is the threshold: pain and functional limitation that conservative management hasn't adequately addressed.

Two dogs with the same diagnosis (hip dysplasia, for example) may receive different recommendations. A dog whose pain is well-controlled on medication and physio may not need FHO yet. A dog who is still significantly lame despite maximal conservative management does. For the specific signs that indicate a dog's hip pain has reached that threshold, see signs that lead to this recommendation.

The grade of radiographic disease matters, but it doesn't override the clinical picture. Veterinary Practice News quotes board-certified surgeon Michelle Powers: "We don't treat X-rays, we treat dogs."

Primary conditions that lead to FHO recommendations

1. Hip dysplasia

Hip dysplasia is the most common condition leading to FHO in dogs. The hip joint forms improperly, leading to looseness, abnormal mechanics, progressive cartilage wear, and ultimately painful osteoarthritis.

FHO for hip dysplasia is most commonly recommended when:

• Moderate to severe arthritis is established on radiographs
• The dog has persistent, uncontrolled pain despite appropriate medical management
• The dog is a small to medium breed where FHO functional outcomes are most reliable
• THR is not feasible (financial or health contraindications)

Veterinary Healthcare Associates confirms: "FHO surgery in dogs is typically recommended when pain or dysfunction in the hip cannot be managed effectively through medication or physical therapy alone."

For hip dysplasia as the primary indication, see hip dysplasia as the primary indication.

2. Femoral head and neck fractures

Traumatic fractures of the femoral head or neck may occur from road accidents, falls, or other high-impact injuries. When these fractures:

• Cannot be reconstructed internally (too comminuted, too small fragments)
• Would require complex fixation in a dog where the prognosis for repair is poor
• Occur in a dog where the hip was already dysplastic (reducing the chance of fracture repair leading to good function)

FHO is often the most practical and effective path. It removes the fractured bone, eliminates the source of pain, and allows the false joint to form.

3. Legg-Calvé-Perthes disease

Legg-Calvé-Perthes disease (also called avascular necrosis of the femoral head) is a condition in which the blood supply to the femoral head is interrupted, causing the bone to deteriorate and eventually collapse. It primarily affects small and toy breeds, most commonly in young dogs under 12 months.

VCA Animal Hospitals describes it: "This uncommon condition, most frequently seen in miniature and toy breed dogs, causes the bone within the femoral head to begin to die at an early age."

FHO is the standard surgical treatment for Legg-Calvé-Perthes disease. The procedure is ideally performed before the collapsing femoral head causes secondary changes in the acetabulum. Young small dogs treated for Legg-Calvé-Perthes often achieve excellent FHO outcomes because they heal quickly, adapt well, and have good pre-surgical muscle condition.

4. Chronic hip luxation

Hip luxation (dislocation) occurs when the femoral head is displaced from the acetabulum. When a dislocated hip cannot be maintained in the correct position after closed reduction (manual repositioning without surgery), surgical options are considered.

FHO is indicated for hip luxation when:

• Closed reduction has failed or isn't appropriate
• Surgical repair of the luxation is not feasible
• The hip socket is dysplastic (repair may not produce good function)
• The hip has been luxated chronically and secondary changes prevent normal function

VCA Animal Hospitals notes: "In some cases, a hip that is out of the socket cannot be replaced with manipulation or other medical means. Surgical repair of hip luxations can be costly and is not always successful, so many dog owners elect FHO for small dogs with hip luxation."

5. Severe hip osteoarthritis

End-stage hip arthritis where cartilage is completely eroded produces painful bone-on-bone contact with every step. When pain medication and physiotherapy can no longer adequately control this pain, FHO removes the grinding contact point.

This indication is more common in older dogs. Importantly, FHO can be performed at any age, and age alone is not a contraindication. For senior dogs, the consideration is anesthetic risk and recovery capacity rather than age as a disqualifier.

For whether FHO is recommended for senior dogs specifically, see whether FHO is recommended for senior dogs.

When FHO is recommended over other surgical options

FHO vs. THR

THR is generally the preferred surgical option for large active dogs when it's feasible. FHO is recommended over THR when:

• The dog is under approximately 45 to 50 lbs (small to medium breed)
• Budget doesn't permit THR
• The dog has health conditions that make THR's longer, more complex anesthesia higher risk
• THR isn't available locally

FHO vs. DPO/TPO

DPO/TPO (double or triple pelvic osteotomy) is a preventive surgery performed only in young dogs (under 10 months old) with hip laxity and minimal arthritis. Once significant joint damage is established, DPO/TPO is no longer appropriate. FHO addresses the damaged joint directly.

When FHO is deferred

FHO is deferred when:

• Conservative management is still adequately controlling pain
• The dog's condition is in early stages without established arthritic pain
• The dog is a large active breed who is a good THR candidate and budget permits THR

Is FHO recommended for puppies?

FHO can be performed at any age, including puppies. Young dogs with Legg-Calvé-Perthes disease or irreparable femoral neck fractures may need FHO at a young age. Puppies generally recover well due to their adaptive musculature and healing capacity.

For the specific considerations around FHO in very young dogs, see whether FHO is recommended for puppies.

The diagnostic process before FHO is recommended

FHO is not recommended based on clinical signs alone. The full workup before FHO includes:

Physical examination:

• Hip joint palpation for pain on extension, rotation, and abduction
• Assessment of range of motion
• Gait analysis
• Orthopedic examination of all joints (Veterinary Practice News notes that one-third of dogs referred for hip dysplasia actually have concurrent stifle disease)

Diagnostic imaging:

• Radiographs (X-rays) of the hip joints in standard positioning
• Radiographs of the stifles to rule out concurrent cruciate disease
• Assessment of femoral head appearance, joint congruity, and degree of arthritis
• Advanced imaging (CT) in cases of complex fracture assessment

The combination of clinical signs, physical examination findings, and radiographic assessment together determines whether FHO is the most appropriate recommendation.

For the alternatives considered before recommending FHO, see alternatives considered before recommending FHO.

What FHO surgery is before the recommendation becomes a plan

If you've received or are approaching a recommendation for FHO, understanding exactly what the surgery involves is the natural next step. For a full explanation of the procedure, see what FHO surgery is.

Frequently asked questions

My vet said FHO "might be needed." What does that mean?

Usually it means the dog's condition has progressed to the point where surgery is on the table, but the vet wants to trial or continue conservative management first, or wants additional diagnostic information (X-rays, specialist assessment) before making a formal recommendation. Ask specifically: what would change the recommendation from "might" to "is recommended"?

Does my dog's size affect whether FHO is recommended?

Yes, significantly. FHO is primarily recommended for small to medium dogs because they form more functional false joints and achieve more reliable outcomes. In large dogs, the recommendation depends more on THR feasibility: if THR is appropriate and affordable, that's generally preferred. If THR isn't feasible for any reason, FHO is still a reasonable option for a large dog in chronic pain.

Can FHO be recommended if my dog hasn't tried conservative management?

For acute conditions like irreparable femoral fractures, FHO may be recommended without a trial of conservative management because the condition doesn't benefit from it. For progressive conditions like hip dysplasia, conservative management is typically the first step before FHO is formally recommended.

FHO is recommended when the hip is causing pain that the dog can't live comfortably with and that conservative management can't adequately control. The conditions that lead to it, hip dysplasia, Legg-Calvé-Perthes, fractures, luxation, and arthritis, are the hip's most serious failure modes. Recognizing when you've crossed the threshold from "managing" to "this needs surgery" is what the FHO recommendation reflects.

Resources

• VCA Animal Hospitals. Femoral Head Ostectomy (FHO) in Dogs. vcahospitals.com
• Veterinary Healthcare Associates. FHO Surgery in Dogs. vhavets.com
• Veterinary Practice News. When Should You Recommend an FHO? veterinarypracticenews.com
• Dallas Veterinary Surgical Center. Femoral Head Ostectomy (FHO). dvsc.com via ctfassets.net

FHO is one path to managing a painful hip. It's not the only one, and for some dogs it's not the best one.

Whether you're exploring options before committing to FHO, or looking for paths that don't involve surgery at all, understanding the full range of alternatives helps you make a genuinely informed decision.

Quick answer: Alternatives to FHO include total hip replacement (THR), which offers superior function especially in large breeds; DPO/TPO for young dogs before arthritis develops; and conservative non-surgical management (pain medication, weight loss, physical therapy, supplements) for mild to moderate cases. The right alternative depends on your dog's size, age, the degree of joint damage, and your goals for their function.

Key takeaways

• THR is the most effective surgical alternative, offering near-normal joint function at higher cost.
• DPO/TPO is the preferred option for puppies who still qualify by age and joint condition.
• Conservative management is a real option for mild to moderate cases, not just a bridge to surgery.
• Weight loss is the most impactful non-surgical intervention for dogs with hip pain.
• Physical therapy builds muscle support that partially compensates for joint instability.
• No non-surgical option reverses joint damage; they manage symptoms within the joint's limits.

Why exploring alternatives matters

FHO is a permanent, irreversible procedure. Removing the femoral head eliminates the pain from bone-on-bone contact, but it also permanently alters the joint anatomy. Before choosing FHO, it's worth understanding whether another surgical option would produce better function for your dog's specific situation, or whether non-surgical management might be sufficient.

The ACVS framework suggests considering FHO when other options have failed or aren't appropriate. This implies that other options should be considered first.

For background on what FHO itself involves before comparing alternatives, see what FHO involves before considering alternatives.

Surgical alternative 1: Total hip replacement (THR)

THR replaces the entire hip joint with a prosthetic ball and socket. The result is near-normal joint anatomy and function.

When THR is preferred over FHO:

• Large or giant breeds (over 45 to 50 lbs) where full athletic function is the goal
• Active dogs who need complete joint restoration
• When budget permits the significantly higher cost
• Dogs who are skeletally mature (typically over 9 to 12 months)

Published outcomes: THR achieves 80 to 98% excellent function across published studies, substantially better than FHO's 62.8% good-to-excellent rate across all sizes.

Cost: $4,000 to $8,000+ per hip, compared to $1,200 to $2,500 for FHO.

The practical consideration: THR requires a specialist surgeon, specialized equipment, and is not available at most general practices. For owners in areas without specialist access, FHO may be the only feasible surgical option.

For the full comparison between FHO and THR, see total hip replacement as an alternative.

Surgical alternative 2: DPO/TPO (double or triple pelvic osteotomy)

DPO/TPO cuts and repositions pelvic bones to improve how the socket holds the femoral head. It's a preventive procedure that changes the mechanics of the hip before significant damage accumulates.

Who qualifies:

• Dogs typically under 10 months of age
• Confirmed hip laxity on radiographs
• Minimal or no arthritis on imaging
• Dog is still actively growing

Outcome: DPO/TPO can significantly reduce the progression of hip dysplasia when performed at the right time. It doesn't treat pain from established arthritis; it prevents further deterioration.

Cost: Typically $3,000 to $6,000. More expensive than FHO upfront, but may prevent the need for any salvage surgery later.

The window: DPO/TPO is a time-limited option. Once arthritis is established or skeletal growth is complete, it's no longer appropriate. For adult dogs, this option is not available.

Surgical alternative 3: JPS (juvenile pubic symphysiodesis)

JPS is the earliest intervention available for puppies showing hip laxity. It's performed in puppies under 20 weeks of age by closing a growth plate to influence how the pelvis develops.

Who qualifies:

• Puppies under 20 weeks with confirmed hip laxity
• No significant arthritis present
• Goal is prevention, not treatment of current pain

Outcome: JPS can reduce future hip disease development. PetMD reports approximately 25% of puppies show no signs of future hip dysplasia after JPS, with 74% reversal of hip looseness noted pre-surgery.

Cost: Typically $800 to $1,000, making it the most affordable surgical option.

This option closes permanently with age. For puppies still in the window, it's worth discussing with your vet before any other surgical path is chosen.

Non-surgical alternative: conservative management

Conservative management is not a fallback for owners who can't afford surgery. For mild to moderate hip disease that is adequately controlled, it's a legitimate long-term path.

Weight management

Weight loss is the single most impactful non-surgical intervention for dogs with hip pain. Every pound of excess weight places additional mechanical load on an already compromised joint. Even modest weight reduction produces measurable improvements in mobility and comfort.

Practical approach:

• Measure food portions; don't free-feed
• Account for treats in daily calorie total
• Regular weigh-ins at every vet visit
• Body condition score assessment at every visit

Pain medication (NSAIDs)

NSAIDs (carprofen, meloxicam, grapiprant) reduce inflammation and pain, allowing dogs to remain more active and comfortable. Long-term NSAID use requires:

• Bloodwork monitoring every 6 months for kidney and liver function
• Food with every dose to prevent GI effects
• Dosing adjusted to the minimum effective dose

Long-term NSAID use carries its own risks. Dogs whose pain requires escalating doses or where NSAIDs are no longer controlling symptoms adequately have exhausted this path.

Physical therapy and targeted exercise

Physical therapy builds the muscle mass around the hip that partially compensates for joint instability. Stronger hindquarter muscles provide dynamic stabilization that reduces pain and improves function.

Key exercises for conservative management:

• Controlled leash walking on soft ground (builds muscle without excessive joint loading)
• Sit-to-stands (targets the quadriceps and hip extensors)
• Hydrotherapy (swimming or underwater treadmill: full muscle engagement without joint impact)
• Balance work (balance discs, cavaletti poles)

For the full conservative management approach relevant to hip disease, see conservative management for hip dysplasia.

Joint supplements

Glucosamine, chondroitin, omega-3 fatty acids (EPA/DHA from fish oil), and green-lipped mussel extract support cartilage health and reduce joint inflammation. They don't reverse damage, but they support the joint within the limits of its condition.

Evidence quality varies between products. Look for products with published clinical evidence in dogs, not just human research extrapolated to dogs.

Adequan injections

Polysulfated glycosaminoglycan (PSGAG), marketed as Adequan, is an injectable joint modifier that supports cartilage health and has anti-inflammatory properties. Administered by a vet as a loading dose protocol, then less frequently for maintenance. Evidence for benefit in canine hip disease is stronger than for most oral supplements.

Acupuncture and laser therapy

Acupuncture and low-level laser therapy (photobiomodulation) are used as adjuncts to other pain management strategies in some dogs. Evidence is variable, but some dogs respond well. They're typically used alongside medication and physiotherapy rather than as standalone treatments.

For the non-surgical FHO alternatives in the context of large dogs specifically, see non-surgical FHO alternatives.

When conservative management is no longer adequate

Conservative management works within the limits of what the joint can do. As disease progresses, those limits narrow. Signs that conservative management is no longer sufficient:

• Pain medication dosing has been escalated and is still not controlling symptoms
• The dog is avoiding activities that were previously possible with medication
• Progressive muscle atrophy is developing despite exercise
• Quality of life is clearly declining despite consistent conservative management

At this point, surgical evaluation becomes appropriate, and the choice between FHO and THR depends on the dog's size, age, and budget.

For the full framework of when surgery becomes the appropriate recommendation, see pros and cons that make alternatives worth exploring.

Comparison table

Frequently asked questions

Can I try conservative management before deciding on FHO?

Yes, and in most cases conservative management should be tried first for hip dysplasia and arthritis. The exception is acute conditions like fractures or Legg-Calvé-Perthes disease where conservative management won't address the underlying problem.

If conservative management works for now, can I delay surgery indefinitely?

For some dogs, yes. Mild hip disease managed effectively with weight control, physiotherapy, and appropriate medication can remain stable for years. For progressive disease, delay allows more joint damage to accumulate before surgery, which can make surgery more complex and outcomes less complete.

Is THR always better than FHO?

For large, active dogs where full function is the goal, THR consistently delivers better outcomes. For small dogs, FHO outcomes are already excellent and THR's additional cost and complexity may not be justified. For dogs where THR is not feasible due to health or financial reasons, FHO provides real benefit.

The best alternative to FHO is the one that matches your dog's specific situation: their size, age, degree of joint damage, activity expectations, and your capacity to commit to whatever the chosen path requires. There is no single right answer. There is only the most appropriate answer for your dog.

Resources

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

When your vet recommends FHO surgery, you're agreeing to something that will happen while your dog is under anesthesia and you're in the waiting room. Understanding what actually takes place, step by step, makes the experience less abstract and helps you prepare practically and emotionally.

This guide walks through the full FHO procedure: the preparation before surgery, what happens in the operating room, and what the first hours after surgery look like before your dog comes home. For a broader explanation of what FHO is and what it achieves, see what FHO surgery is.

Quick answer: FHO surgery typically takes 1 to 2 hours under general anesthesia. The surgeon removes the femoral head and neck through an incision over the hip, closes the joint capsule and soft tissue, and sutures the skin. Your dog is monitored in recovery for several hours before discharge. The procedure itself is well-established and considered technically straightforward by veterinary surgeons with orthopedic experience.

Key takeaways

• FHO is performed under general anesthesia: your dog feels nothing during the procedure.
• Pre-surgical bloodwork and X-rays are required to confirm the diagnosis and assess anesthetic safety.
• The procedure takes 1 to 2 hours for most dogs; larger dogs or complex cases may take longer.
• The femoral head and neck are removed completely through a lateral incision over the hip.
• Soft tissue closure is meticulous: the surrounding muscles form the support structure for the false joint.
• Your dog typically stays for several hours post-surgery before discharge with medications and instructions.

Before surgery: the preparation phase

Pre-surgical assessment

FHO is not performed without diagnostic confirmation. Before surgery is scheduled, your vet will complete:

Physical examination:

• Orthopedic assessment of the hip, including palpation for pain on extension and rotation
• Gait analysis
• Assessment of all joints to rule out concurrent disease (Veterinary Practice News notes one-third of dogs referred for hip pain have concurrent stifle disease)

Radiographs (X-rays):

• Standard hip radiographs in dorsoventral positioning to assess the femoral head, acetabulum, degree of arthritis, and joint congruity
• Stifle radiographs if indicated
• Provides the baseline images the surgeon uses for surgical planning and post-operative comparison

Pre-anesthetic bloodwork:

• Complete blood count, chemistry panel, and urinalysis
• Identifies kidney or liver dysfunction that would affect anesthetic drug metabolism
• Essential for senior dogs and any dog with known concurrent health conditions
• Garbizo Animal Clinic: "Our veterinarians will conduct a complete pre-anesthetic assessment, including bloodwork, digital radiographs, and a physical exam to confirm the diagnosis and ensure your pet is a good candidate for the procedure."

The night before surgery

Standard pre-surgical instructions:

• Food: withhold food from midnight (or a specific time your vet designates) before the procedure. The stomach must be empty to reduce aspiration risk under anesthesia.
• Water: some practices permit water until the morning of surgery; follow your vet's specific instructions.
• Medications: ask your vet whether your dog's regular medications should be given the morning of surgery. Some should be given; others should be withheld.
• No bathing or grooming of the surgical site: leave the hair coat as-is. Clipping is done under sterile conditions in the clinic.

Morning of surgery: drop-off

On the day of surgery:

• Bring your dog in at the scheduled time, typically early morning to allow monitoring through the day
• The admissions process includes a brief examination and review of your consent form
• You'll confirm your contact number and the vet's emergency contact protocol
• A brief pre-surgical examination is performed to confirm the dog is in appropriate health to proceed

Most practices will discharge the same day, typically in the late afternoon.

During surgery: what happens in the operating room

Step 1: anesthesia induction

Your dog receives pre-anesthetic medications (a sedative and often a pre-emptive analgesic) to reduce anxiety, lower the anesthetic dose needed, and begin pain management before the skin is cut.

Induction is typically achieved with an intravenous agent. Once unconscious, a breathing tube is placed in the trachea and connected to gas anesthesia for maintenance throughout the procedure.

Monitoring throughout includes:

• Continuous ECG for heart rhythm
• Pulse oximetry for oxygen saturation
• Blood pressure monitoring
• Capnography (monitoring exhaled carbon dioxide)
• Body temperature (dogs lose heat during surgery; active warming is used)

Step 2: positioning and preparation

Your dog is placed in lateral recumbency (on their side) with the affected hip facing up. The surgical area is clipped and prepared using multiple rounds of antiseptic scrub (typically chlorhexidine or betadine alternating with alcohol) to achieve sterile conditions at the skin surface.

Southwest Veterinary Surgical Service notes: "Special care is taken to ensure that the surgery is done under strict aseptic conditions. The dog's hind limb is clipped the day before the surgical procedure, the skin is evaluated for bacterial infections, and blood work and urine testing are performed prior to surgery to screen for infection."

Sterile drapes are applied around the surgical site, leaving only the prepared area exposed.

Step 3: incision and tissue dissection

The surgeon makes an incision along the lateral (outer) aspect of the thigh, directly over the hip joint. The incision length varies with the dog's size.

Using careful dissection, the muscles are separated to expose the hip joint capsule. The goal is to move tissue rather than cut it where possible, preserving the muscle integrity that will later support the false joint.

Step 4: joint entry and dislocation

The joint capsule is incised to access the hip joint directly. The hip is then deliberately luxated (dislocated) to bring the femoral head fully into view.

The round ligament (ligament of the head of the femur, which connects the femoral head to the acetabulum) is severed.

Step 5: femoral head and neck removal

This is the defining step of the FHO procedure.

Using a bone saw or an osteotome (a surgical chisel) and mallet, the femoral head and neck are removed at the base of the neck. PetMD describes it: "Using either a saw or osteotome and mallet, the femoral head and neck are removed."

The surgeon assesses the cut surface to ensure the femoral neck has been completely removed at the appropriate level. Any rough bone edges are smoothed. Complete neck removal is critical: if any neck remains, it can cause continuing bone contact and pain (a recognized cause of revision surgery in published FHO outcome data).

Step 6: soft tissue closure

Closure of the soft tissue around the now-empty socket is performed in layers:

• The joint capsule and periarticular soft tissues are sutured to partially fill the space between the femoral shaft and the acetabulum. This closure helps initiate the environment in which the false joint will form.
• Muscle layers are sutured over the joint capsule in anatomical position
• Subcutaneous tissues are closed
• Skin is closed with sutures or surgical staples

Animal Works Veterinary Surgery: "The surrounding tissues and muscles are left intact and will support the formation of a new fibrous joint over time."

The total operative time is typically 1 to 2 hours. Larger dogs and more complex cases take longer.

After surgery: the hospital recovery phase

Immediate post-operative monitoring

After the surgical site is bandaged, your dog moves to a recovery area. Anesthesia monitoring continues until your dog is fully conscious and able to swallow reflexively.

During this period:

• Body temperature is monitored and supported (dogs are prone to hypothermia after surgery)
• Pain is assessed and additional analgesics administered if needed
• The incision is checked for any immediate bleeding or concerns
• Your dog is kept calm and comfortable in a padded area

Most dogs regain full consciousness within 1 to 3 hours of surgery completion.

Pain management before discharge

Your dog will receive injectable pain medication in the hospital before they go home. This provides a higher level of immediate pain control than oral medications alone and covers the most acute post-surgical period.

By the time you pick your dog up, they should be comfortable enough to walk (with assistance) and oriented to their surroundings.

Discharge: what you receive

At discharge, expect:

• Oral medications: an NSAID (anti-inflammatory) for 7 to 14 days, often gabapentin for 5 to 7 days, and sometimes a short course of an opioid for the first 1 to 3 days
• Written discharge instructions: including activity restrictions, incision care, E-collar use, medication schedule, and when to return for the first recheck
• Emergency contact information: who to call if you have concerns outside business hours
• Recheck appointment: typically at 10 to 14 days for suture removal and incision assessment

What to look for in the first 24 hours at home

The first 24 hours are about settling in and monitoring:

• Drowsiness and disorientation: completely normal as anesthesia clears
• Reluctance to eat: normal on surgery day; offer food in the evening if your dog seems interested
• Not drinking much water: offer water; if they haven't drunk by 24 hours, contact your vet
• Holding the operated leg up: expected for the first days
• Mild incision swelling: expected in the first 48 to 72 hours

For what normal recovery looks like from day one through 12 weeks, see what to expect after surgery.

For the cost of the procedure you've just learned about, see what the procedure costs.

How FHO compares to the procedure you may have been offered instead

If your vet mentioned total hip replacement as an alternative to FHO, the procedures are fundamentally different. FHO removes the femoral head. THR replaces it with a prosthetic implant. Understanding what each involves helps clarify why your vet recommended one over the other.

For the specific indications that led to an FHO recommendation rather than THR, see when FHO is recommended.

For what FHO surgery achieves and what realistic outcomes look like, see success rates for the procedure.

Frequently asked questions

Can I stay with my dog during surgery?

No. FHO is performed in a sterile surgical suite, and no visitors are permitted. You will drop your dog off and receive updates by phone. Most practices will call you when surgery is complete to let you know how it went.

How will I know if something went wrong during surgery?

Your vet will call you as soon as surgery is complete. If any complications arose during the procedure, they'll discuss this with you at that time. Serious intraoperative complications are uncommon with FHO. The most common issue is ensuring complete removal of the femoral neck, which an experienced surgeon confirms before closure.

My dog seems much worse immediately after surgery than before. Is that normal?

Yes, for the first 24 to 48 hours. The dog is in more acute pain than the chronic pain they had pre-surgery, anesthesia affects alertness and coordination, and the leg is being held up rather than used. This is expected. If your dog's condition doesn't begin improving after day 2, contact your vet.

What should I do if I can't reach my vet and something looks wrong?

If you have a concern after hours that you believe requires urgent attention (significant wound opening, obvious neurological signs, inability to rouse your dog), go to the nearest emergency veterinary clinic. Bring your discharge paperwork so they have the surgical context.

FHO surgery itself is the shortest part of the whole process. The decision takes time; the recovery takes weeks. The surgery is one to two hours in the middle. Knowing exactly what happens in those two hours makes the whole experience easier to enter and to explain to the people around you who are also wondering how your dog is doing.

Resources

• PetMD. Femoral Head Ostectomy in Dogs and Cats: How It's Done, Prep, and Recovery. petmd.com
• Animal Works Veterinary Surgery. Understanding Femoral Head Ostectomy (FHO). animalworksvets.com
• Southwest Veterinary Surgical Service. Total Hip Replacement (THR). swvetsurgery.com
• Garbizo Animal Clinic. What to Expect During FHO Surgery for Pets. garbizoanimalclinic.com