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A member asked:

How do artificial joints stay in place and work with the human body? how long do they last?

1 doctor answer4 doctors weighed in
Dr. Jonathan Shults
25 years experience
Total Joints: It depends on the joint that was inserted. The most common are Hip and Knee. As the materials improve the longevity has also improved. Its not uncommon to get 20 years out of a well placed total joint these days. The literature says there is a 1% chance of failure for each year the joint is in. So 100% will fail at 100 years.

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A 25-year-old member asked:

What is the reason that natural body joints last longer than artificial joints?

2 doctor answers5 doctors weighed in
Dr. Joel McClurg
Specializes in Orthopedic Surgery
Ability for repair: The difference really comes down to wear. While the native joint has some ability to repair itself, an artificial joint doesn't. How long an artificial joint lasts is determined by many factors, but eventually comes down to plastic wear. Every single step caused wear particles to form and eventually these will cause the knee to fail. Depending on other factors that can take 5-30 years.

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Last updated Mar 26, 2015


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