Triple pelvic osteotomy (TPO) costs roughly $3,500 to $7,000 per hip in a dog, and many patients eventually need both sides.
Before anything else on this page: this surgery has a window, and the window closes. If your young dog has been diagnosed with hip dysplasia and TPO has been mentioned, the timing conversation is urgent in a way almost nothing else in orthopaedics is.
The window
TPO is for the young dog with a loose hip that has not yet been damaged. The candidate age is roughly five to ten months.
Two things close it:
Skeletal maturity. The procedure cuts and rotates segments of the pelvis, and it depends on growth plates that fuse as the dog matures.
Arthritis. This is the hard gate. TPO prevents arthritis developing; it cannot reverse it. Once radiographs show arthritic change in the hip, the opportunity has gone — permanently — and the conversation moves to managing arthritis or, later, replacing the joint.
An owner who finds this page two months late has lost the option. That is unusual and worth stating plainly, because most orthopaedic decisions can wait a little and this one cannot.
What it does
In hip dysplasia the socket is too shallow, so the ball sits loosely and grinds against the rim. That abnormal contact is what generates arthritis over the following years.
TPO cuts the pelvis in three places and rotates the socket over the ball, restoring proper coverage, then fixes it in the new position with a specialised bone plate.
It is preventive surgery. It changes the joint's trajectory rather than treating a symptom, which is why it has to happen before the damage does.
TPO, DPO, or something else?
You will hear both acronyms and they are close relatives.
DPO (double pelvic osteotomy) makes two cuts rather than three. It is less invasive, has a shorter surgery time and a faster recovery, and many surgeons now prefer it. Discuss which your surgeon favours and why — both are legitimate.
Comparing across procedures, since an owner pricing options will otherwise compare the wrong things:
- TPO/DPO — the young, loose, not-yet-arthritic hip. Preventive.
- [Total hip replacement](/procedures/total-hip-replacement/) — the mature, arthritic, painful hip. Definitive, and the best functional outcome for an established problem, but a bigger procedure with implant-related risks.
- [FHO](/procedures/fho/) — the salvage option. Removes the ball of the joint entirely, letting a false joint form. Cheaper, no implants, and works best in smaller dogs; function is good rather than excellent.
- Medical management — weight control, controlled exercise, rehabilitation, pain relief. Appropriate at any stage and the foundation under all of the above.
How candidates are selected
Diagnosis is not just a radiograph. Your surgeon will examine the hips under sedation, testing whether the joint can be pushed out and reduced back in — the Ortolani sign — and measuring the angles that predict whether rotating the socket will actually capture the ball.
If the hip does not reduce properly, the joint is already too damaged for TPO to help, whatever the dog's age. Radiographs check for early arthritic change and confirm skeletal status.
This assessment is what separates a good candidate from an expensive disappointment, and it is worth having done by someone who performs the procedure regularly.
Recovery
- One to two nights in hospital
- Six to eight weeks of strict confinement — crate or small room, lead-only toileting, no stairs, no jumping, no play with other dogs
- Recheck radiographs at around six to eight weeks to confirm bone healing
- Graded return to activity over a further four to six weeks
- [Rehabilitation](/procedures/hydrotherapy/) is genuinely valuable, particularly for rebuilding muscle
Complications include implant loosening or screw problems, narrowing of the pelvic canal (more of a concern with three cuts than two, and one reason DPO gained ground), delayed healing, and sciatic nerve irritation.
Many dogs need the other side done later, often two to four weeks after the first while still inside the age window. Budget and plan for that possibility from the start rather than being surprised by it.
Is it worth it?
For a correctly selected patient, yes — the aim is a dog that reaches middle age without the arthritis it was heading for, avoiding a hip replacement or a life on pain relief.
The honest caveats: it does not guarantee a lifetime free of hip problems, some dogs still develop arthritis eventually, and it is expensive up front for a preventive result you cannot see. Set against the cost and difficulty of a hip replacement at four years old, many owners consider the arithmetic reasonable.
Do not breed from an affected dog. Hip dysplasia is substantially heritable, and screening schemes exist precisely to reduce its incidence.
Who isn't a candidate
- Age: Any dog whose hip already shows arthritis on radiographs — this is the hard gate. TPO prevents arthritis; it cannot reverse it, and by the time the joint is arthritic the window has shut.
- Age: Skeletal maturity. The candidate window is roughly 5–10 months, and it closes as the pelvic growth plates fuse.
- Other: A hip that does not reduce properly on examination under sedation, where the joint is already too damaged to reposition usefully.
- Weight: Marked obesity, which loads the osteotomy while it heals and is corrected first.
Common questions
How much does TPO surgery cost for a dog?
Roughly $3,500 to $7,000 per hip, including surgery, the specialised plate, hospitalisation and follow-up radiographs. Many dogs need both sides done, often a few weeks apart while still inside the age window, so budget for the possibility of two procedures. Rehabilitation afterwards is usually additional.
What age can a dog have a TPO?
Roughly five to ten months. Two things close the window: skeletal maturity, since the procedure depends on growth plates that fuse as the dog matures, and the appearance of arthritis in the hip. TPO prevents arthritis rather than reversing it, so once arthritic change shows on radiographs the option is gone permanently.
What is the difference between TPO and total hip replacement?
TPO is preventive surgery for a young, loose, not-yet-arthritic hip — it rotates the socket over the ball to restore coverage before damage occurs. Total hip replacement is definitive treatment for a mature, arthritic, painful hip, replacing the joint with an implant. They address different stages of the same disease and are not alternatives at the same moment.
Is TPO surgery worth it for hip dysplasia?
For a correctly selected young dog, yes — the aim is reaching middle age without the arthritis the hip was heading for, avoiding a later hip replacement or lifelong pain relief. It does not guarantee a problem-free lifetime and some dogs still develop arthritis. Candidate selection under sedation is what separates a good outcome from an expensive disappointment.
How long is recovery after a triple pelvic osteotomy?
One to two nights in hospital, then six to eight weeks of strict confinement — crate or small room, lead-only toileting, no stairs, jumping or play. Recheck radiographs at six to eight weeks confirm bone healing, followed by a graded return to activity over a further four to six weeks. Rehabilitation helps rebuild the muscle lost during confinement.
Sources
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