Similar wear rate and migration in mobile and fixed bearing TKR prostheses at 10 years .
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Differences in long-term fixation between mobile-bearing and fixed-bearing knee prostheses at ten to 12 years’ follow-up: A single-blinded randomised controlled radiostereometric trial
J Bone Joint Surg Br. 2012 Oct;94(10):1366-71Exclusive Author Interview
Dr. B.G. Pijls discusses differences in long-term fixation between mobile-bearing and fixed-bearing knee prostheses at ten to 12 years.
33 patients (42 knees) with osteoarthritis or rheumatoid arthritis were randomized to receive a mobile bearing (MB) or a fixed bearing (FB) total knee replacement (TKR). Over 10 to 12 years, radiostereometric analysis (RSA) indicated that there was greater lateral translation, subsidence and posterior tilt in the FB prosthesis. However, there was greater internal rotation in the MB prosthesis. There were no differences in Knee Society scores (KSS), conventional radiographic measurements, and long term migration between the prostheses.
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