How long will my hip replacement last?

The question every patient asks

At almost every hip replacement consultation, patients ask some version of the same question: how long will it last? It is a completely reasonable thing to want to know. A hip replacement is a significant decision, and the prospect of needing a second operation — a revision — later in life is a legitimate concern.

The honest answer is that no surgeon can predict with certainty how long any individual implant will last. What we can say with confidence is that modern hip replacements perform very well over the long term, and we have outstanding data to back that up — courtesy of the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR).

What is the AOANJRR?

The AOANJRR is a national database that records every joint replacement performed in Australia. It has been collecting data since 1999 and now holds records on well over half a million hip replacements. It is one of the most comprehensive joint replacement registries in the world, and its annual reports are among the most reliable sources of information on implant performance available anywhere.

Because the registry tracks patients over many years, it can answer questions that individual surgeons or smaller studies simply cannot — including what proportion of hip replacements are still in place at 10, 15, and 20 years after surgery.

The AOANJRR gives us population-level data that no single surgeon or hospital could generate on their own. It is the best evidence we have on how long hip replacements actually last in the real world.

What the data shows

The registry measures performance by tracking the cumulative revision rate — the proportion of hip replacements that have required a revision procedure (a reoperation to replace or adjust the implant) at various time points after the original surgery.

For primary total hip replacement, the AOANJRR consistently shows:

At 10 years after surgery, approximately 95% of hip replacements are still in place. Around 5% have required revision.

At 15 years, approximately 91–92% remain in place.

At 20 years, approximately 87–88% of hip replacements have not required revision.

These are population-level figures across a very large number of patients. They represent some of the best long-term implant survival data in medicine. By comparison, many cardiac procedures or spinal surgeries have far less robust long-term outcome data.

Why some replacements are revised sooner

Revision surgery is not always a sign that something went wrong. The most common reasons a hip replacement is revised include instability (dislocation or the feeling that the hip might give way), aseptic loosening (the implant gradually loosening from the bone without infection), periprosthetic fracture (a fracture of the bone around the implant), and infection.

Of these, instability and loosening are the most common. Infection is less common but the most serious. Advances in surgical technique — including the direct anterior approach and robotic-assisted implant placement — have meaningfully reduced the risk of instability in particular, by improving the precision with which the implant is positioned.

Age matters more than most patients expect

The single biggest factor that influences the likelihood of revision is the patient’s age at the time of surgery. This is not because younger patients receive a different implant — it is because younger patients are generally more active (placing more mechanical demand on the implant), and because they have more years ahead of them in which a revision might become necessary.

A 75-year-old who has a hip replacement today has a very high probability of never needing revision. A 45-year-old having surgery for significant hip damage may well outlive their implant and require revision at some point later in life. This does not mean surgery should be delayed — operating before severe damage occurs often produces better long-term outcomes — but it does mean the conversation about longevity is different for different patients.

The AOANJRR data reflects this clearly: revision rates are consistently higher in younger age groups, not because the surgery fails more often but because more years are being counted.

Other factors that influence longevity

Beyond age, several other factors affect how long a hip replacement is likely to last. Body weight is one: higher BMI places greater mechanical load on the implant and has been associated with modestly higher revision rates in registry data. Activity level matters similarly — high-impact activities place more demand on bearing surfaces over time.

Implant design and material selection also play a role. The bearing surface — the pairing of materials that articulate within the joint — has been an active area of development. Ceramic-on-ceramic and ceramic-on-polyethylene combinations have excellent long-term wear characteristics. The metal-on-metal bearings that were widely used in the 2000s had unacceptably high revision rates and are no longer used for primary hip replacement.

Surgical technique is another important variable. Accurate implant positioning reduces mechanical wear and the risk of instability. This is one reason robotic-assisted surgery, which allows the implant to be placed within a pre-planned target zone confirmed against the patient’s own CT scan, is increasingly used — it reduces the human error component in an already demanding technical procedure.

What “lasting well” actually means for patients

It is worth separating two questions that patients sometimes conflate. The first is: will the implant still be in place? The AOANJRR data answers that well. The second is: will I be happy with the result? These are related but not identical questions.

The vast majority of patients who have a hip replacement report significant improvement in pain and function. Satisfaction rates in large registry studies consistently exceed 90%. That said, a small proportion of patients experience persistent pain or dissatisfaction even with an implant that is radiologically and mechanically intact. This can relate to nerve sensitivity, muscle recovery, or expectations that were not fully met by the procedure.

The most useful thing patients can do before surgery is to have a frank conversation about what the operation can and cannot achieve, and to enter rehabilitation committed to the work that follows.

The bottom line

Modern hip replacements are durable, well-evidenced implants. The AOANJRR data gives us genuine confidence: roughly 95% of hip replacements are still in place at 10 years, and roughly 87–88% at 20 years. For most patients over 60, there is a very high probability that a hip replacement will last the rest of their life.

For younger patients, revision is more likely to become relevant at some point — but even in that context, revision hip surgery is a well-established procedure with good outcomes. Having a replacement now does not mean “burning bridges” for the future.

If you would like to discuss the specific factors relevant to your situation — your age, activity level, imaging, and the options available — I am happy to do that at your consultation.