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Femoral Head Ostectomy Procedure | Guide for Pet Owners

Femoral Head Ostectomy Procedure | Guide for Pet Owners

Femoral Head Ostectomy

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Owners

Step-by-step guide to the femoral head ostectomy (FHO) procedure in dogs. Learn what to expect before, during, and after surgery

By 

Sustainable Vet Group

Updated on

July 29, 2025

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Femoral Head Ostectomy Procedure | Guide for Pet Owners

What Is Femoral Head Ostectomy (FHO) in Dogs?

FHO is a surgery where the ball of the hip joint (called the femoral head and neck) is removed. This helps relieve pain from joint problems like injury or disease. After the bone is removed, the body makes a false joint made of scar tissue and muscle. This is called a pseudo-joint. It doesn't work like a real hip joint but still allows your dog to move comfortably.

This surgery works well for many dogs. Over time, they learn to use the leg again with little or no pain. It is not a joint replacement, but it helps remove the part causing pain.

  • Removes the ball of the hip joint (femoral head and neck)
  • Stops painful bone-on-bone rubbing
  • Body forms a soft tissue “pseudo-joint” over time
  • Best for dogs under 25 kg but can help larger dogs too
  • Helps restore movement without needing an implant

When Is FHO Recommended for Dogs?

FHO is used when the hip joint is badly damaged and causing pain that other treatments can't fix. It helps dogs live more comfortably when full joint repair isn't possible. Some common problems treated with FHO include hip dysplasia, joint injuries, and arthritis.

This surgery is best for small to medium dogs, but large dogs can also benefit with the right care. It's often chosen when total hip replacement (THR) is too expensive or risky. FHO is also used when infections or past surgeries make other treatments unsafe.

  • Used for hip dysplasia, trauma, arthritis, or failed implants
  • Good for dogs under 25 kg, but others may qualify too
  • Works well when THR or TPO are not an option
  • Often used as a salvage surgery after joint damage
  • Helps improve comfort and mobility without needing a full implant

Preparing Your Dog for FHO Surgery

Getting your dog ready before surgery helps improve recovery and reduce risks. Your vet will do a full checkup to make sure your dog is healthy enough for anesthesia and healing. This includes bloodwork and hip X-rays to confirm the joint problem and check for other issues. Follow all pre-surgery instructions carefully.

Your dog will need to stop eating 8–12 hours before surgery. Ask your vet about any changes in medications. At home, you should prepare a calm, safe space where your dog can rest without slipping or jumping. A recovery area makes a big difference in healing.

  • Complete bloodwork and X-rays before surgery day
  • No food 8–12 hours before surgery (ask vet for water rules)
  • Set up a crate or quiet room with soft bedding
  • Place non-slip mats or rugs on slippery floors
  • Have ramps or stairs ready for cars or furniture
  • Fill prescriptions in advance (pain meds, antibiotics)

What to Expect on Surgery Day

Surgery day can feel stressful, but knowing what to expect helps you stay calm and prepared. Most dogs are dropped off at the veterinary hospital early in the morning. Your vet will review the plan, answer last-minute questions, and begin the surgical prep. The surgery is done under general anesthesia, and your dog will be closely monitored the entire time.

The FHO procedure usually takes about 45–90 minutes. After the femoral head is removed, the area is cleaned and closed with stitches. Your dog will wake up in a recovery area, where staff will manage pain and check vital signs.

  • Drop-off happens early, with time for final questions
  • General anesthesia keeps your dog asleep and pain-free
  • Surgery takes about 1–1.5 hours depending on complexity
  • Vets remove the femoral head and control bleeding
  • After surgery, your dog goes to a monitored recovery space

Most dogs stay at the clinic for a few hours to a full day. Once stable, your vet will share home care instructions and pain medications. Then your dog can go home to begin recovery.

Step-by-Step: The FHO Surgery Explained Simply

Here’s how the FHO procedure is done, step by step. Each part of the surgery is designed to remove pain and allow your dog to move comfortably again.

Step 1: Dog Is Sedated and Positioned

First, your dog is placed under general anesthesia so they are fully asleep and feel no pain. Vets monitor breathing, heart rate, and body temperature the whole time. Once your dog is stable, they are gently positioned on their side, with the affected leg facing upward.

The surgical area is clipped and cleaned to remove fur and bacteria. This ensures a sterile field to prevent infection. Positioning is very important, as it gives the surgeon clear access to the hip joint and allows the leg to move freely during the procedure.

Step 2: Incision Over the Hip Joint

The surgeon makes a small incision over the outer part of the hip. This area is carefully chosen to avoid major nerves and blood vessels. The muscles are gently moved aside to expose the hip joint underneath.

Every move is done with care to protect the surrounding tissues. You won’t see this part, but it’s one of the most precise parts of the operation. This step allows the surgeon to see the femoral head clearly and get ready for removal.

Step 3: Femoral Head and Neck Are Removed

Once the joint is visible, the surgeon uses a special tool to carefully cut off the femoral head and neck. These are the damaged parts of the hip joint causing your dog pain. By removing them, we stop the bone from grinding against the socket.

This creates room for the body to form a soft tissue “false joint.” It sounds dramatic, but this step is safe and helps relieve chronic pain that medications alone can’t fix.

Step 4: Bone Edges Are Smoothed

After removing the femoral head, the surgeon smooths out any sharp edges on the cut bone. This is important because rough bone can irritate nearby tissues during movement. A file or special surgical burr is used to round the area.

Smoothing the bone helps your dog move more comfortably after surgery and prevents inflammation. This step also supports faster healing and reduces scar tissue buildup that could limit mobility.

Step 5: Muscles and Skin Are Closed

Finally, the muscles that were moved are gently returned to their original position and stitched together. Then the skin is closed using sutures or staples. A clean bandage may be placed over the wound depending on your vet’s routine.

The entire area is checked to make sure there is no bleeding or fluid buildup. Your dog is then moved to the recovery area, where staff closely monitor them until they wake up safely from anesthesia.

Post-Operative Care at Home: First 1–2 Weeks

The first two weeks at home are focused on keeping your dog comfortable, protected, and healing well. Pain management is key, so give all medications exactly as prescribed. Use an E-collar to stop licking or biting at the incision. Check the surgical site twice a day for redness, swelling, or discharge.

Your dog may need help standing and walking. Use a towel or sling under the belly to support them during short potty breaks. Limit movement—no jumping, stairs, or playtime.

  • Give pain meds and antibiotics on time
  • Keep the E-collar on until stitches are removed
  • Use a sling for support during walks
  • Keep your dog indoors, in a small space with soft bedding
  • Offer small, bland meals if appetite is low
  • Watch for signs of pain like whining, shaking, or limping

Some swelling is normal near the incision. Bowel movements may be delayed 2–3 days due to anesthesia and reduced activity. Call your vet if there’s heavy swelling, foul smell, fever, or bleeding.

Rehabilitation and Recovery: Weeks 3 to 8+

From week 3 onward, rehab helps your dog rebuild strength and use the leg more naturally. Start with passive range-of-motion (PROM) exercises to gently move the leg while your dog lies down. These help keep the joint flexible. Short, slow leash walks on flat surfaces should be done daily to build muscle.

As healing improves, you can add light activities like walking uphill or on grass. If available, underwater treadmill sessions or professional physical therapy can greatly speed up recovery.

  • PROM exercises 2–3 times per day
  • Gradual increase in leash walks and gentle play
  • Hydrotherapy or treadmill therapy for joint support
  • Massage and warm compress for muscle comfort
  • Add joint supplements like glucosamine or omega-3

Use rehab tools to help progress safely. A sling harness gives extra support, while toe grips improve traction. Slow feeders keep your dog calm during meals. Wobble boards and balance pads can be added later for strength training.

Expected Results and Long-Term Outlook

Most dogs do very well after FHO surgery and return to a pain-free, active life. While the hip joint is no longer normal, the new pseudo-joint lets your dog walk, run, and play again. Some dogs may have a slight limp or leg shortening, but this rarely affects their quality of life.

The most important factor in recovery is muscle strength. Strong muscles support the hip and make up for the missing joint. That’s why rehab and daily walks are so important, especially in the first few months.

  • Most dogs regain full function in 2 to 3 months
  • A mild limp or uneven gait may remain but causes no pain
  • Recovery depends more on muscle tone than body size
  • Large dogs may need longer rehab, but still benefit
  • With proper care, dogs can enjoy years of active life

With patience, your dog can recover fully and return to their favorite activities.

FHO vs Other Hip Surgery Options

FHO is one of several choices for dogs with hip problems. Total Hip Replacement (THR) replaces the joint with an artificial implant. It offers a near-normal hip function but is more expensive and complex. Triple Pelvic Osteotomy (TPO) reshapes the pelvis and is only done in young dogs with early hip dysplasia. Conservative care means no surgery, using only meds, rehab, and weight control.

FHO is often chosen for dogs who are not good candidates for THR or TPO due to age, cost, or medical issues. It’s simpler and more affordable than THR, with good results in small to medium dogs.

  • FHO: Less costly, good for small/medium dogs, strong pain relief
  • THR: Best function, high cost, needs more follow-up
  • TPO: Preventive surgery for young dogs only
  • Conservative care: May delay surgery, but doesn’t fix joint damage

FHO offers a strong balance of pain relief, affordability, and recovery success.

Tips to Make Recovery Easier for You and Your Dog

Recovery after FHO takes time, effort, and lots of patience. Your dog may have good days and slow days—that’s normal. The key is staying calm, following your vet’s plan, and keeping a positive mindset. A consistent routine will help your dog trust the process and feel safe at home.

  • Keep a simple rehab log or short daily videos to track progress
  • Reward small wins like standing, placing weight, or walking straight
  • Use puzzle feeders, snuffle mats, or gentle training games to prevent boredom
  • Rotate toys or hide treats to keep your dog mentally stimulated

Celebrate every improvement, even if it’s small. Your support and calm energy will give your dog the confidence to keep trying. And don’t forget to rest too—you’re part of the recovery team. Recovery is a journey, not a race. Stay kind to both of you.

FAQs About the FHO Procedure in Dogs

How painful is FHO surgery for dogs?

FHO surgery causes temporary pain, but we manage it with strong pain relief. Most dogs are comfortable within a few days. The goal of the surgery is to remove constant joint pain caused by bone damage. With proper medication and care, your dog should feel better quickly and become more active in just a few weeks.

Can large dogs recover well from FHO?

Large dogs can recover well from FHO, though they often need more rehab support. Building muscle is key, especially in heavier breeds. Daily walks, physical therapy, and a healthy weight help improve outcomes. While results may vary, many large dogs walk comfortably and return to a good quality of life after proper healing and consistent exercise routines.

How long does my dog need to rest after FHO?

Rest is important for the first two to three weeks. After that, your dog can begin slow walks and gentle rehab. Full recovery usually takes between six to twelve weeks. Your vet may adjust this based on progress. Following the rehab plan closely will help your dog heal safely and return to regular activity with less pain.

Will my dog always limp after FHO?

Some dogs may show a slight limp, especially when tired or walking slowly. This doesn’t always mean pain. It’s often due to leg shortening or muscle change. With consistent rehab, many dogs walk normally or with only a minor gait difference. The main goal is comfort, and most dogs move without pain after healing is complete.

Can both hips be done at once (bilateral FHO)?

Yes, bilateral FHO can be done when both hips are painful. Some vets prefer doing one side at a time to help with recovery support. If both hips are treated at once, your dog may need more help walking early on. With time, rehab, and patience, dogs can regain strength and live active, comfortable lives again.

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