International Orthopaedics December 2005, Volume 29, Issue 6, pp 375–379

Residual posterior femoral condyle osteophyte affects the flexion range after total knee replacement

Yau, W.P., Chiu, K.Y., Tang, W.M. et al.

We followed up 92 patients with total knee replacement and a pre-operative knee flexion of at least 90°. The patients were followed up regularly at 3 months, 6 months and 1 year. The outcome measured was the amount of maximum passive knee flexion at the end of 1 year after replacement. The potential factors affecting the final flexion range were investigated. After regression analysis, apart from pre-operative knee flexion (p<0.001), the most significant independent surgical factors that predict the amount of post-operative flexion were presence of residual posterior femoral condyle osteophyte (p=0.046) and overstuffing the patella by more than 2 mm during resurfacing of the patella (p<0.001).

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