FHO Surgery Recovery in Dogs: A Realistic Timeline

Most dogs toe-touch within days of an FHO. They reach their final level of use somewhere between one and three months in the trials, at a median of about four months in a 108-dog series, and some take a year. Many keep some difference in that leg for life. Sometimes only a gait lab can measure it, and sometimes it is a limp you can see after a long walk. A limp at week three is normal. What tells you how she is doing is whether this week's limp is lighter than last week's. After most orthopedic surgery the instruction is rest. After an FHO it is controlled movement, starting the day after surgery.

What an FHO removes, and what grows back in its place#

A femoral head ostectomy, also written FHO or femoral head and neck excision (FHNE), removes the ball at the top of the thigh bone and the narrow neck beneath it. Nothing is put in to replace it: no implant, no plate, no artificial socket.

What fills the space is your dog's own tissue. Over the following weeks scar tissue forms between the cut femur and the empty socket, and the muscles around the hip take over the job of carrying the leg. The result is a false joint, a pseudarthrosis. It is not a hip. It is a muscle-supported hinge that does most of a hip's job without the bone-on-bone grinding that was causing the pain.

That is why FHO is called a salvage procedure. The American College of Veterinary Surgeons (ACVS) puts the goal plainly: to relieve the pain, "not to maintain/recreate normal hip function."^[8] Almost everything else about the recovery follows from that. There is no bone cut waiting to knit and no screw to work loose. What is being built is soft tissue and muscle, and they respond to use.

Why FHO recovery runs the opposite way to TPLO recovery#

If you have been through a TPLO with another dog, set those instructions aside. A TPLO is a bone cut held by a plate, and the weeks of strict restriction protect that repair while the bone heals. An FHO has no repair to protect. A leg that is not used does not build a better false joint. The leg stiffens and the thigh muscle wastes, at exactly the time she needs that muscle most.

dogorthopedic.com

The trial with the most detailed protocol started passive range-of-motion work about 20 hours after surgery. The hip, knee and hock were bent and straightened 20 to 30 times, two to three times a day, from the first postoperative day.^[1] Our range-of-motion guide shows the movement itself.

Here is the half of the protocol that rarely gets quoted. The same trial restricted activity for a month: the dog "was allowed to walk slowly on a short leash, but running and jumping were prohibited."^[1] ACVS says dogs are "encouraged to use the limb as soon as possible in a controlled manner," and it also says that two weeks after surgery the dog "is encouraged to exercise."^[8] Those two statements do not contradict each other. Range-of-motion work that you do for her is not exercise. Day one is gentle movement done for her. Week two onward is more of her own walking, still on the lead. Your surgeon's protocol overrides both, because the surgeon knows what they found inside the joint.

The realistic timeline, from the studies that measured it#

These figures come from studies that measured rather than estimated. They describe a range, and your dog sits somewhere inside it.

Sources for that table: ^{[1][6][5][9][2][4]}

An earlier version of this table called the 30-to-90-day figure "consistent use of the leg." That was wrong. The trial defines it as the point where weight-bearing is full, or where the remaining limp stops changing. It is a plateau, not a milestone on the way to normal.

Notice the spread. One to twenty-five days to the first toe-touch is an enormous range for the same operation. Notice too that the finish line comes later than the moment you relax. She will look recovered months before the measurements agree, and that is the point at which it is tempting to stop the rehab.

Still limping in week three: what is normal, and what is not#

This question reaches us as a search query, almost word for word, misspellings included, and it deserves a straight answer: a limp in week three is normal. The four-hospital review put the median lameness score at 2 out of 5 four to six weeks after surgery.^[5] ACVS says it "may take up to six weeks or longer after surgery for some dogs to show improvement."^[8] In 40 large-breed dogs on a force plate, the operated leg carried less weight than the legs of healthy dogs at every test, out to day 120.^[10] A dog who is fully sound at three weeks is ahead of the published range, not on it.

So at week three the question is not whether she limps. It is which way the limp is moving.

The useful comparison is this week against last week, and memory is bad at it. Film fifteen seconds of her walking away from you on the same stretch of floor, at the same time of day, once a week. Our guide to telling whether a limp is getting better explains how to score that video without fooling yourself.

If the limp got worse right at the start of week three, look at the calendar before you look at the hip. In a trial where dogs were given an anti-inflammatory or a placebo for 21 days after FHO, owners of 12 of 31 dogs said the gait got worse for a few days after the course stopped.^[10] The authors suggested a longer course might have helped. Course lengths vary widely: seven days in one trial, one or two months of daily anti-inflammatories in the ACVS description, and until final weight-bearing, 48 to 82 days, in another trial. Check your own discharge sheet.^[2][6][8] If a course has just ended, tell the practice. It is useful information and an easy conversation. Do not restart, extend or add any medication yourself. The decision is your vet's, and human pain relievers are dangerous to dogs.

What is not normal is our reading of the published ranges and complication lists, not a validated checklist. Call the same day for any of these:

• No attempt to touch the foot down by the end of week two. This one is a call that week rather than the same day: the anti-inflammatory-only group in the older trial averaged 15.6 days to first toe-touch, so a slow start on that regimen is within what was measured. First toe-touch came by day 12 in all 38 dogs analysed in the newer trial, and by day 25 in the older one.^[6][1]
• She was using the leg and is now clearly using it less, for more than a few days, and the end of a medication course does not explain it.
• The foot starts to knuckle over or drag. Damage to the sciatic nerve, or the nerve getting trapped, is on the published complication list.^[9] Knuckling is a nerve sign, not a hip sign. Our knuckling guide explains the difference.
• The incision looks different from yesterday, or she will not let you touch the hip when she let you before.

Complications are not rare, and that is worth knowing in advance rather than discovering. In the four-hospital review, 33.8% of dogs had a minor complication and 13.2% a major one.^[5] The published list also includes limb shortening, muscle wasting, a slipping kneecap, reduced hip movement and continued lameness.^[9] A recheck that finds nothing wrong is not a wasted trip.

dogorthopedic.com

Pain control: what the two trials actually found#

The 2023 trial split 30 dogs into three groups of ten by the anaesthesia they had, then into subgroups of five by what they went home on.^[1] Group A had an epidural (morphine) before surgery and a local anaesthetic (ropivacaine) injected into the surgical field after the bone cut. Group B had the local anaesthetic only, and Group C had neither, with saline in its place. Within each group, half went home on an anti-inflammatory alone and half on an anti-inflammatory plus tramadol.

Two findings come out of that table, and they are different findings. For the first toe-touch, the local anaesthetic and the tramadol each made a real difference on their own, compared with an anti-inflammatory alone. The local anaesthetic took the wait from 15.6 days to 7 (p = 0.003), and tramadol took it from 15.6 to 8.2 (p = 0.008). The authors concluded the two "appear to have a similar positive impact." For final weight-bearing, neither one alone made a significant difference. The epidural plus the local did, 55 days against 76 (p = 0.020), and adding tramadol on top of both brought it to 33 days, significantly faster than every other regimen.

Then the follow-up. In 2026 the same group randomised 42 dogs, all of whom had the epidural, to an anti-inflammatory with or without tramadol at home. Four, two from each group, needed rescue pain relief and were withdrawn, leaving 38 analysed.^[6] Tramadol did not reach significance for first toe-touch (p = 0.087) or final weight-bearing (p = 0.659). The authors flag a moderate effect size on the first measure and say their study may have been too small to detect it.

So the honest reading is this. Pain control during and after surgery measurably shortens the early weeks. For the whole recovery, the clearest signal in this trial sits with the anaesthesia given at surgery, the epidural plus the local, with tramadol adding to it here but not significantly in the follow-up. The 1.8 days that gets quoted, and that we quoted without this context until 17 October 2026, is five dogs given everything. These are small groups from one centre. A dog in pain will not load the leg, and a leg that is not loaded does not build the muscle the false joint relies on. That last step is our reasoning, not a measured result.

What to do with it: ask before surgery what the pain plan is, specifically whether she will have an epidural, whether local anaesthetic will go into the surgical site, and what she goes home on for the first two weeks. Those are the three things these trials tested. Do not adjust medication on your own. Your job is to report quickly and honestly when she is still hurting.

Does your dog's size decide the outcome?#

ACVS says FHO "can provide enough comfort in a dog weighing less than 60–70 lbs to avoid the daily use of anti-inflammatory pain medication," which is a statement about heavier dogs possibly needing medication afterwards, not a ban on operating on them. It also says FHO dogs "must remain slim throughout their lives and follow a limited exercise program," which it spells out as "leash walks and confinement to the yard and house," and that they "cannot be athletic dogs who hunt, do agility, high level obedience, run with their owners." Ask your surgeon which of those limits they expect for your dog.^[8] Newer evidence pushes against the weight line, but it is thinner than it sounds. Here is what it actually is.

A 2025 force-plate study followed 27 dogs weighing 11.5 to 39 kg, about 25 to 85 lb. At twelve months the operated leg's peak force during a stride was about the same in both groups, 73% of body weight in dogs of 20 kg or less and 72% in dogs over 20 kg, and by six months the two hind legs were close to symmetrical. The heavier group's median recovery was three months against four for the lighter group, a difference that was not statistically significant.^[2] The authors conclude FHO "can be considered a suitable orthopedic procedure for medium- to large-breed dogs."

There are three things we found in reading it that the paper does not make easy to see:

• There are no small dogs in it. Dogs under 10 kg were excluded, so its "smaller" group is 11.5 to 20 kg. It cannot tell you anything about a 5 kg terrier.
• The groups were set by weight, not by treatment. It is a comparison of two kinds of dog, not a trial of a treatment.
• The same dogs appear to have been in a swimming trial. The same team published a randomised swimming-therapy study in AJVR. It has the same ethics licence (IACUC-KKU-30/64), the same 2021–2023 enrolment window, 30 enrolled and 27 analysed, and the same weight range to the decimal.^[7] In that paper, every dog did at least 14 days of home rehabilitation and 12 of the 27 also swam weekly. The force-plate paper does not mention swimming. Its good large-dog results come from dogs who had structured rehab, which is a reason to do the rehab, not a reason to ignore size.

A 2018 study looked at why large dogs sometimes do badly. CT scans of four dogs with long-term poor outcomes, weighing 27 to 35 kg in the paper's own table, found bone-on-bone contact in three, each from too little bone removed. In the fourth, the authors judged that too much had probably been taken, and two of the four had loose bone fragments. Four cases with no comparison group describe what went wrong in those dogs rather than prove a cause.^[3] The authors call the weight explanation "a widely accepted presumption" and write that the cause of poorer results in large breeds "has not been determined."

The practical translation: size still counts. ACVS says results after FHO "vary and are highly dependent upon patient size and proper postoperative physical rehabilitation."^[8] Nothing published can yet say how much of the large-dog problem is weight and how much is technique, so for a large dog it is reasonable to ask how many FHOs the surgeon has done, and reasonable to ask for a referral. If a total hip replacement is affordable and appropriate, that is a different conversation, with a better mechanical result and a much bigger bill. The one US teaching hospital we found publishing its fees lists $8,500 to $10,000 for the surgery alone, plus $2,000 to $2,500 for the consultation and diagnostics and $600 to $700 for each of two rechecks, without saying whether that is per hip.^[12]

The part nobody tells you: comfortable is not the same as normal#

One long-term series comes from the veterinary school in Munich: 132 dogs and 51 cats operated on between 1978 and 1989, first published in German in 1997 and reprinted in English in 2010. Eighty-one of those animals, dogs and cats together, were re-examined an average of four years after surgery. Function was rated good in 38%, satisfactory in 20% and poor in 42%. And 96% of owners were satisfied.^[4]

Read those figures together. Neither one is wrong. FHO is usually good at what owners care about most, which is relief from the pain, and imperfect at what a clinical examination measures. Seventeen of the animals also had gait analysis, which found deficits in small as well as large breeds, and the authors noted that "these deficits were not visible during rapid movement."^[4]

A more recent Greek series of 108 dogs shows both halves of the picture from the owners' side. Three years after surgery, 94 of them (87%) had full weight-bearing by owner report, and 46 (42.6%) showed some lameness after exercise that eased with rest.^[9] The newest multi-hospital review put it bluntly: its dogs "reached similar levels of function but never achieved normal ambulation."^[5]

She can trot across the yard looking sound while that leg does less of the work. She will not tell you. She will spread the load and get on with it, the way dogs do.

“Because your dog can't tell you how much pain he or she is in.”

None of this is a reason to regret the surgery. It is a reason to keep her lean, which ACVS calls a lifelong requirement for FHO dogs, and to watch the other hip and her lower back, which now carry a share of the work for the rest of her life. If one thigh starts to look thinner than the other, our guide to muscle wasting in one back leg covers how to measure it.

Is paid rehabilitation worth it? The evidence runs both ways#

This used to be a single sentence here saying formal physiotherapy "appears throughout the FHO literature as a normal part of the protocol." That was true but not useful. Here is what the trials actually show.

For it: ACVS calls "aggressive physical rehabilitation and controlled exercise to increase hip range of motion" essential for an optimal outcome.^[8] And in the randomised swimming trial, on top of a home programme every dog did, the 12 dogs who swam weekly from day 14 reached force-plate recovery at a median of three months, against six months for the 15 who did not (P = .04). By lameness score at the trot the gap was three months against five, and that difference was not significant (P = .22).^[7]

Not shown: an underwater-treadmill pilot gave four dogs ten weekly sessions starting about three weeks after surgery and compared them with five dogs who had none. Groups were chosen by owner compliance, not at random. The treadmill dogs improved more, but "between-group differences did not reach statistical significance."^[11]

Against, over the long run: in the four-hospital review, owner-reported physiotherapy "was not associated with improved long-term outcomes."^[5] In 108 dogs whose owners were surveyed three to thirteen years after surgery, the duration of physical therapy did not correlate with time to final weight-bearing.^[9] Both are retrospective, and owners who choose rehab may have had harder cases to begin with, so neither settles the question.

What we would do: the home work every protocol shares is free and non-negotiable, and in our view it is the core of what ACVS calls essential. That means range of motion from day one, short lead walks, grip underfoot and keeping her lean. Paid hydrotherapy has one small randomised trial showing faster early recovery and no evidence yet that it changes where she ends up. If you can afford it, it is a reasonable way to buy speed. If you cannot, do the home programme properly.

dogorthopedic.com

What actually helps at home, cheapest first#

Start with what you already own. A rolled bath towel passed under her belly and held at both ends is a perfectly good sling for the first days of toilet trips, and plenty of dogs never need anything else. Every rug and runner in the house should go down on the slick floors, because a dog is less willing to load a sore leg on a surface that has already slid under her.

If the towel is not working, because she is large, you have steps to manage, or your own back is the limit, a purpose-built rear sling is the upgrade that earns its money.

The thing to know about a sling after an FHO is when to take it off. This surgery's whole protocol depends on the leg doing the work. Every stride the sling carries is a stride the hip muscles did not. So the GingerLead's job here is short and specific: slick floors, steps, the first toilet trips, and catching a slip. Our rule, which is our reasoning rather than a tested protocol, is this. Once she toe-touches reliably on a grippy surface, walk her on grass without it and keep it only for the risky moments. It is rear-only, which suits a one-hip problem, and it does not include the chest harness the maker expects older dogs to wear. It is $69.95 new. The $44.95 offer on the same Amazon listing was a reconditioned unit when we last read it on 8 October.^[15] Check the return terms before you order, because the window for a clean return is short (our GingerLead page has them), and the straps can rub the inner thighs, especially if they are left tight while she lies down, so check the skin daily in the first week. If she needs help at the front too, or you will be lifting for months rather than weeks, the two-piece Help 'Em Up is the better buy. It is bulkier than a sling and more harness than a short one-hip recovery usually needs, its rear straps can chafe the inner thigh if left tight while she lies down, and sizing is easy to get wrong. It costs $80 to $140 by size direct from the maker and $95 to $155 on Amazon, both read 15 October 2026.^[17][16]

The case for these is preventing a slip on a hard floor during the restricted weeks. It is a household-safety argument, not a recovery one. Rugs solve most of it for free. ToeGrips cover what rugs cannot, the moment of standing up and the floor between rugs. Before you buy them, know the evidence. No one has tested nail grips in FHO dogs. The only post-surgical trial, 30 dogs after a TPLO randomised to real or sham grips, found no difference in lameness, weight-bearing or the owners' own answers about slippery floors.^[13] The other published study, in healthy dogs, found changes "unlikely to be clinically relevant."^[14] Buy them, if at all, for the mechanism, a rubber grip where a hard nail meets a hard floor, not in the hope that she will load the leg sooner. That is what the TPLO trial measured, and it found nothing. They wear out as the nails grow, so a bag is a recurring cost rather than a one-off; our ToeGrips page reconciles the two different lifespans the maker publishes. A dog who chews her feet can strip a set in a week. If your floors are carpeted, skip them. Our guide to dogs slipping on floors covers the room-by-room version.

What to do this week#

If surgery has not happened yet: ask whether she will have a local or regional block during the operation, and ask for the written pain plan for the first fourteen days. If she is a large dog, ask how the surgeon expects her size to affect the result, how many FHOs they have done, and whether a referral makes sense. Get the rugs down before you bring her home.

If you are in the first two weeks: give the medication exactly as prescribed and on schedule. Do the range-of-motion work every day. Keep walks short, slow, frequent and on the lead. Call the practice if she has not tried to touch the foot down by the end of week two.

If you are at week three and she still limps: that is the expected course. Film her this week and again next week. Note whether a medication course has just ended. Call if the limp is clearly worse for more than a few days, if the foot knuckles, or if the incision changes.

If you are at week six and she looks great: it is tempting to stop here. The force plate says her leg is still improving out to three or four months, and closer to six for symmetry. Keep going, and keep her lean.

The delay is the injury, first in the months before a diagnosis and again in the months after surgery, when everyone relaxes too early. She cannot tell you which of those she is in. A weekly video can.

Sources#

1. Krystalli A, Sideri A, Kazakos GM, Anatolitou A, Prassinos NN. Contribution to the Study of Perioperative Factors Affecting the Restoration of Dog's Mobility after Femoral Head and Neck Excision: A Clinical Study in 30 Dogs. Animals (Basel). 2023;13(14):2295. Randomised, blinded, prospective; 30 dogs, 2.5–34 kg; subgroups of five. doi:10.3390/ani13142295
2. Tuchpramuk P, Kaenkangploo D, Srithunyarat T, Seesupa S, Hoisang S, Lascelles BDX, Kampa N. Force Plate Gait Analysis in Dogs After Femoral Head and Neck Excision. Veterinary Sciences. 2025;12(5):469. Prospective cohort, 27 dogs, 11.55–38.78 kg, grouped by weight. doi:10.3390/vetsci12050469
3. Ober C, Pestean C, Bel L, et al. Use of clinical and computed tomography findings to assess long-term unsatisfactory outcome after femoral head and neck ostectomy in four large breed dogs. Acta Veterinaria Scandinavica. 2018;60:28. The text gives the weight range as 27–31 kg; its Table 1 lists 31, 27, 35 and 30 kg. doi:10.1186/s13028-018-0382-8
4. Off W, Matis U. Excision arthroplasty of the hip joint in dogs and cats. Clinical, radiographic, and gait analysis findings from the Department of Surgery, Veterinary Faculty of the Ludwig-Maximilians-University of Munich, Germany. Veterinary and Comparative Orthopaedics and Traumatology. 2010;23(5):297-305 (English reprint; first published in Tierärztliche Praxis 1997;25(4):379-387). doi:10.1055/s-0037-1617478 · PubMed 20945541. Percentages are of the 81 dogs and cats re-examined. (This entry once carried PMID 21274500, which is a 2011 letter commenting on the reprint, not the paper.)
5. Schaul KR, Bleyaert HF. Acute canine coxofemoral disease and chronic canine coxofemoral disease were associated with similar long-term functional outcomes following femoral head ostectomy. Journal of the American Veterinary Medical Association. 2025;263(9):1169-1175. Retrospective, 68 dogs, 4 hospitals, client survey. doi:10.2460/javma.25.04.0272
6. Krystalli A, Kazakos G, Savvas I, Prassinos N. Lack of Effectiveness of Tramadol for Earlier Limb Weight-Bearing After Femoral Head and Neck Excision in 38 Dogs. Animals. 2026;16(7):1064. Randomised, 38 dogs. doi:10.3390/ani16071064
7. Tuchpramuk P, Hoisang S, Kaenkangploo D, Srithunyarat T, Seesupa S, Kampa N. Swimming therapy accelerates limb function in dogs after femoral head and neck excision: evidence from ground reaction force measurement. American Journal of Veterinary Research. 2025;86(12). Randomised, 12 swimming vs 15 non-swimming. doi:10.2460/ajvr.25.04.0139
8. American College of Veterinary Surgeons. Canine Hip Dysplasia (client information page; FHO section). Read 17 October 2026. acvs.org
9. Krystalli A, Sideri A, Kazakos G, Papaefthymiou S, Savvas I, Anatolitou A, Prassinos N. Prognostic factors associated with femoral head and neck excision outcomes in 108 dogs. A retrospective study. Journal of the Hellenic Veterinary Medical Society. 2025;76(3):9851-9862. doi:10.12681/jhvms.40194
10. Grisneaux E, Dupuis J, Pibarot P, Bonneau NH, Charette B, Blais D. Effects of postoperative administration of ketoprofen or carprofen on short- and long-term results of femoral head and neck excision in dogs. Journal of the American Veterinary Medical Association. 2003;223(7):1006-1012. Randomised, placebo-controlled, 40 large-breed dogs. doi:10.2460/javma.2003.223.1006
11. Maneeganondh N, Kampa N, Srithunyarat T, Tuchpramuk P, Ngampring P, Naknil P, Hoisang S. Effectiveness of underwater treadmill rehabilitation following femoral head and neck ostectomy in dogs: A prospective controlled pilot study. Veterinary World. 2026;19(8):3621-3634. Non-randomised, 9 dogs analysed. doi:10.14202/vetworld.2026.3621-3634
12. University of Missouri Veterinary Health Center. Canine Total Hip Replacement (fees as published; the page does not say whether they are per hip). Read 17 October 2026. vhc.missouri.edu
13. Repac J, Alvarez LX, Lamb KE, Spector D. Effect of Nail Grips on Weight Bearing and Limb Function in 30 Dogs 2 Weeks Post Tibial Plateau Leveling Osteotomy. Animals. 2022;12(18):2312. doi:10.3390/ani12182312
14. Roush JK, Moore LE, Renberg WC. Dr. Buzby's ToeGrips Application Results in Minimal Changes in Kinetic Gait Parameters in Normal Dogs. Frontiers in Veterinary Science. 2017;4:111. doi:10.3389/fvets.2017.00111
15. Amazon listing B00GPYFA50, GingerLead rear support sling, read via the Amazon Creators API 8 October 2026. amazon.com
16. Help 'Em Up Harness, maker's product page and price feed, read 15 October 2026. helpemup.com
17. Amazon listing B0DK81SCG5, Help 'Em Up Harness (Medium), read via the Amazon Creators API 15 October 2026. amazon.com

This article is educational and does not replace veterinary advice. Surgical and medication decisions for your dog belong to your veterinarian or board-certified surgeon.