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

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

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

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

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

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