How long does a THR last?
A common reply to this question is that total joint replacement lasts 15-20 years. A more accurate way to think about longevity is via the annual failure rates. Most current data suggests that both hip and knee replacements have an annual failure rate between 0.5-1.0%. This means that if you have your total joint replaced today, you have a 90-95% chance that your joint will last 10 years, and a 80-85% that it will last 20 years. With improvements in technology, these numbers may improve.
American Association of Hip and Knee Surgeons
Q: How long does a hip replacement last?
A: Twenty years after surgery, 80% of hip replacements are still functioning well. Several factors determine how long a hip replacement lasts, including patient age and activity level, the type of implant used, and the reason the hip was replaced. Hip replacement materials continue to improve, and we are optimistic that current components will last longer than those used 20 years ago.
University of Maryland Medical Center
One very large study found that 80% of hip replacements were functioning well after 15 years in the younger (less than 65) patients, and 94% of the older (over 65) patients.
How long will the artificial hip last?
In most cases, the hip replacement should outlast your lifespan. The 15-to-20-year data on the longevity of hip replacement components is excellent, with more than 90 percent of the implants still functioning well in many studies. But, this is neither a guarantee nor assurance, for the simple reason that life is unpredictable.
THR Survival Rates
By Dr Roger Brighton Orthopaedic Surgeon atCentral West Orthopaedics & Sports Injuries
Investigators have consistently reported survival rates of more than 90% for hip replacements at 10 years (and even beyond).
Cemented hip replacement: 92% @ 10 years, 83% @ 15 years
Cemented stem: 90% @ 25 years
Porous cup: 95.7% @ 15 years
Porous stem: 86.8% @ 15 years
Porous cups (variety): 95-100% @ 10 years
It is important to inform patients that all hip replacements have a limited life expectancy, which will vary from patient to patient depending on their size, their weight and other variables. Re-operation (revision) may be required in the long term.
Information based on these studies:
4. Engh, C.A., Hopper R.H. and Engh, C.A. Long-term porous-coated cup survivorship using spikes, screws, and press-fitting for initial fixation. J. Arthroplasty 2004; 19:54S2-60S2.