Why do some knee replacements fail?
The common reasons for a failed knee replacement include -
- loosening, usually from degradation of the cement and/or wear of the plastic component. Bits of plastic may further lead to an immune response and lysis (dissolving away) of bone
- stiffness from arthrofibrosis
- bone breaks
Improved clinical outcomes after revision arthroplasty with a hinged implant for severely stiff total knee arthroplasty. van Rensch PJH, Heesterbeek PJC, Hannink G, van Hellemondt GG, Wymenga AB. Knee Surg Sports Traumatol Arthrosc. 2018 Oct 26. doi: 10.1007/s00167-018-5235-5. [Epub ahead of print].
Have the Causes of Revision for Total and Unicompartmental Knee Arthroplasties Changed During the Past Two Decades? Dyrhovden GS, Lygre SHL, Badawy M, Gøthesen Ø and Furnes O. Clin Orthop Relat Res. 2017 Jul; 475(7): 1874–1886.
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