How long will my knee replacement last? Is there anything I can do to make it last longer?

Knee replacements don't last forever. Today's research shows about 90% of the total knee replacement will last 20 years after surgery and 82% will last for 25 years after surgery. The materials that are used in a knee replacement will go through the wear and tear of everyday living so you may need a revision surgery to update these materials.

There are three major factors that will decide if you need a revision surgery:

  1. Age: The younger you are when you get your knee replacement the more likely you are to need revision surgery.
  2. Sex: If you are male under the age of 70 you are 15% more likely than the woman of the same age group to need revision surgery.
  3. Weight: If you have a body mass index (BMI) of over 30 you are at an increased chance of needing revision surgery.

Watch Lauren answer the questions "How long will my knee replacement last?" and "Is there anything I can do to make it last longer?" below. The video also explains factors that influence the lifespan of a knee replacement.

Read the full blog that discusses how long a knee replacement lasts here.

Read all 5 of Lauren's blogs here!

If you are recovering from a knee replacement, download our Curovate physical therapy app from the links below. Curovate is an app for at-home physical therapy exercises following a knee replacement, ACL surgery, ACL injury or hip replacement. Curovate provides daily video guided strengthening exercises, the ability to measure knee range of motion, in-app chat with a physical therapist to answer your surgery and recovery questions and educational blogs and webinars.

If you need further customized assistance during your knee replacement check out our Virtual Physical Therapy page to book your 1-on-1 video session with a physical therapist.

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3. Evans, J. T., Walker, R. W., Evans, J. P., Blom, A. W., Sayers, A., & Whitehouse, M. R. (2019). How long does a knee replacement last? A systematic review and meta-analysis of case series and national registry reports with more than 15 years of follow-up. Lancet (London, England), 393(10172), 655–663.

4. Gallo, J., Kriegova, E., Kudelka, M., Lostak, J., & Radvansky, M. (2020). Gender Differences in Contribution of Smoking, Low Physical Activity, and High BMI to Increased Risk of Early Reoperation After TKA. The Journal of arthroplasty, 35(6), 1545–1557. .

5. Martin, J. R. , Jennings, J. M. & Dennis, D. A. (2017). Morbid Obesity and Total Knee Arthroplasty. Journal of the American Academy of Orthopaedic Surgeons, 25(3), 188–194. doi: 10.5435/JAAOS-D-15-00684.

6. Moran, C. G. (2000). Total knee replacement: The joint of the decade. Bmj, 320(7238), 820-820. doi:10.1136/bmj.320.7238.820.

7. Singh, J. A., Kwoh, C. K., Richardson, D., Chen, W., & Ibrahim, S. A. (2013). Sex and Surgical Outcomes and Mortality After Primary Total Knee Arthroplasty: A Risk-Adjusted Analysis. Arthritis Care & Research, 65(7), 1095-1102.