Total Hip Replacement Dog: THR vs FHO vs Conservative

When to call a vet. Book a veterinary appointment if your dog is limping on a back leg, struggles to rise, bunny hops, is reluctant on stairs, or has lost muscle over one hip. Go to emergency care straight away if your dog suddenly cannot bear any weight on a limb, cannot stand at all, is in obvious severe pain, has been hit by a car or taken a heavy fall, has a leg that hangs or looks rotated, or collapses. After hip surgery, treat sudden refusal to use the operated leg, a swollen, hot, oozing or opening incision, fever, or a dog who stops eating and becomes dull as an urgent call to the surgical team rather than something to watch overnight.

Yes. Total hip replacement (THR) is a real, established orthopaedic procedure in dogs, performed by board-certified veterinary surgeons using implant systems designed specifically for canine anatomy. The arthritic ball and socket are removed and replaced with a prosthetic femoral stem and head plus an artificial cup seated in the pelvis. Dogs can get a hip replacement at almost any adult size, because implants are manufactured in a wide range of sizes, from systems built for giant breeds down to micro implants used in toy breeds and cats.

THR is not the only surgical route, and it is not the only reasonable plan. For advanced, painful hip disease, surgery is often the standard of care, and the decision about which procedure to pursue, or whether to operate at all, belongs to your veterinarian and the surgeon who examines your dog. The three paths an owner is usually choosing between are total hip replacement, femoral head ostectomy (FHO), and structured conservative management. This page lays out what each one actually does, who it suits, and what recovery demands of you.

What total hip replacement actually involves

In a THR, the surgeon removes the femoral head and neck entirely and inserts a metal stem into the femoral canal, topped with a smooth prosthetic ball. The socket, or acetabulum, is reamed and fitted with a cup, commonly a high-grade polyethylene bearing surface. The joint is reconstructed rather than removed, which is the whole point: the dog gets a working ball-and-socket joint back, with normal-direction load transfer through bone.

Fixation comes in three broad flavours. Cemented systems anchor the implant with bone cement. Cementless systems rely on a press fit and a porous surface that bone grows into over the following weeks. Hybrid constructs mix the two. Your surgeon picks based on bone quality, canal shape, age and their own experience with a given system, all of which is a fair thing to ask about at the consult.

Candidacy matters more than most owners expect. Surgeons generally want a skeletally mature dog, good bone stock, no neurological disease masquerading as hind-limb weakness, and, critically, no active infection anywhere in the body, including skin, dental and urinary infections. Implant infection is the complication everyone is trying hardest to avoid. Other recognised complications include implant luxation (the ball popping out of the cup), femoral fracture, implant loosening over time, and sciatic nerve irritation. A good surgeon will walk you through each one and tell you what their salvage plan is if it happens.

Most dogs have one hip replaced at a time. Many dogs with dysplasia in both hips do well after only the worse side is addressed, because the reconstructed limb takes enough load to offload the other. If both hips need doing, they are staged months apart, not done together.

Femoral head ostectomy: the other surgical route

FHO removes the femoral head and neck and does not replace them with anything. The body fills the gap with fibrous tissue, forming what is called a false joint, or pseudoarthrosis. Bone-on-bone grinding stops because the bone contact is gone. Stability then comes from the surrounding musculature rather than from joint architecture.

That single fact drives everything about FHO outcomes. Dogs with strong hip and thigh musculature, a lean body condition and an owner committed to rehabilitation tend to do noticeably better. The procedure is most often chosen for smaller and lighter dogs, for Legg-Calve-Perthes disease, for irreparable femoral head or neck fractures, for hip luxation that cannot be kept reduced, and as a salvage option when THR is not medically or financially possible. It is also the fallback if a hip replacement ever has to be removed.

Honest expectations: an FHO limb is often slightly shorter, range of motion is usually reduced, and some dogs keep a mild mechanical gait change for life. What most owners are aiming at, and what surgeons describe as the goal, is a comfortable, functional limb rather than a biomechanically normal one. Early, guided use of the leg is part of the plan, not a risk to avoid; your rehab practitioner will tell you when and how much.

Comparing the three paths side by side

	Total hip replacement	Femoral head ostectomy	Conservative management
What happens	Joint is reconstructed with a prosthetic stem, head and cup	Femoral head and neck removed; fibrous false joint forms	No surgery; pain control, weight, exercise and rehab
Typical candidates	Skeletally mature dogs with end-stage hip disease, infection-free, adequate bone stock	Smaller or lighter dogs, salvage cases, failed implants, Perthes disease, some fractures	Mild to moderate signs, dogs not suited to anaesthesia, or owners starting here before deciding
Realistic goal	Return toward near-normal joint mechanics	A comfortable, functional limb	Slow progression of signs and keep the dog comfortable
Load through the limb	Transferred through implants and bone	Carried by surrounding muscle	Carried by the existing arthritic joint
Recovery demands	Strict confinement and controlled leads for an extended period set by the surgeon	Early guided use plus committed rehab	Ongoing, lifelong, never really finishes
If it fails	FHO as salvage	Revision options are limited	Surgery can still be reconsidered

Costs vary widely by clinic, region and implant system, so ask the practice for a written estimate for your own dog rather than relying on figures posted in forums.

When conservative management is the right plan

Plenty of dysplastic dogs live long, comfortable lives without ever reaching an operating table. Conservative management is not the do-nothing option. Done properly it is a programme, and the dogs that do best have owners who run it like one.

The largest single lever is body condition. A lean dog asks less of a damaged joint every stride, every day, for years. After that come controlled leash exercise instead of weekend extremes, hydrotherapy or underwater treadmill work, targeted physiotherapy to build gluteal and hamstring strength, non-slip flooring, ramps instead of jumps, and warmth for stiff mornings.

Pain control belongs to your veterinarian. Prescription anti-inflammatories, adjunct analgesics and monoclonal antibody injections for osteoarthritis pain are recognised veterinary tools, and the choice of medication and the dose are decisions for your vet, so ask them directly. Nothing you read online, this article included, is a reason to stop or skip something your vet has prescribed. If your dog seems less comfortable on the current plan, the answer is a conversation with the practice, not a swap.

For dog hip surgery specifically aimed at dysplasia, there are also age-gated procedures worth asking about if your dog is young: juvenile pubic symphysiodesis in very young puppies, and double or triple pelvic osteotomy in young dogs with joint laxity but not yet significant arthritis. These windows close fast, which is why an early orthopaedic opinion on a wobbly adolescent is worth having.

Soft tissue, recovery windows, and what to watch at home

Whichever path you take, the hip is not only bone. Joint capsule, tendon insertions, gluteal muscle and the fibrous tissue that forms after an FHO all remodel over weeks, and most of that period happens in your living room rather than in a clinic.

What to watch day to day: whether the dog is touching the toe down, partially weight bearing or fully weight bearing; how easily they rise from a lying position, especially after sleep; how they manage stairs, slick floors and getting into the car; whether the thigh muscle on the affected side is holding or shrinking; appetite, sleep and mood; and, after surgery, the incision itself for redness, swelling, heat, gaping or discharge. Signs of pain in dogs are often quiet ones: panting at rest, trembling, restlessness, a tucked posture, licking at the hip, reluctance to be touched, or a dog who simply goes off the sofa and stays in one spot.

What to note and tell the vet: which leg, when the limp started, whether it came on suddenly or crept in, whether it is worse after rest or after exercise, what makes it better, any trip, fall or rough play beforehand, and anything you have already given, including over the counter products, which should always be cleared with the practice first. Short phone videos of your dog walking, trotting and getting up are genuinely useful at the consult, because many dogs look falsely comfortable in the exam room. Bring the medication list and dates of the last doses.

When it becomes an emergency: sudden total refusal to use the leg, a limb that hangs, rotates or looks the wrong length, a dog who cannot stand or who collapses, uncontrolled pain despite prescribed medication, a wound that opens or discharges, fever, vomiting or a dull, unresponsive dog in the days after surgery. In a recently operated hip, a sudden change in how the leg is used can signal implant luxation or infection and needs same-day assessment, not a wait-and-see.

The right surgery is the one your dog's surgeon can justify for this specific dog's size, age, joint anatomy, infection status and your household, not the one with the best reputation on a forum.

Choosing a surgeon and asking better questions

THR is done by board-certified veterinary surgeons, and volume matters. Reasonable questions: how many of these do you perform in a year, which implant system do you use and why, what is your luxation and infection experience, how do you screen for infection beforehand, and what happens if this implant has to come out.

Owner forums, the hip replacement threads on Reddit included, are genuinely useful for understanding what the confinement period feels like and how people set up their homes. They are a poor substitute for radiographs and an orthopaedic exam, because the outcomes people post are self-selected at both extremes.

If you have just been told your dog needs a hip replacement, a second specialist opinion is normal, not disloyal. So is asking whether FHO or a well-run conservative plan would get your particular dog to a good enough place.

Key Takeaways

• Sudden inability to bear weight, a dangling limb, collapse, uncontrolled pain or a hot, discharging surgical wound are reasons for emergency veterinary care.
• Dogs can have hip replacements; canine THR is an established procedure with implants sized from giant breeds down to toy breeds.
• THR reconstructs the joint; FHO removes the damaged bone and relies on muscle and a fibrous false joint.
• FHO tends to suit smaller, leaner, well-muscled dogs and serves as the salvage option after a failed implant.
• Conservative management is a real programme, covering weight, controlled exercise, rehab and veterinary pain control, not a passive choice.
• Young dysplastic dogs may have age-limited surgical options, so get an orthopaedic opinion early.
• Infection screening and surgeon experience matter; ask the practice for a written estimate for your own dog.
• Recovery is a soft-tissue remodelling window as much as a bone one, so track weight bearing, the incision and comfort at home and report changes early.

Your veterinarian owns the diagnosis and the treatment plan: the radiographs, the surgical decision, the pain protocol, the rehab timeline. Only veterinary care, given by a vet, treats the underlying joint disease. If something at home does not look right between appointments, call the practice rather than waiting for the next recheck.

Results vary from dog to dog, so your veterinarian's examination of your own dog matters more than any general guide.

Related guides: Canine Hip Dysplasia Conservative Management Options and Dog Hip Surgery Recovery : Timelines by Procedure.