Chen S C, Helal B
Int Orthop. 1980;4(1):67-71. doi: 10.1007/BF00266606.
A review of 50 knees in 42 patients operated upon between August, 1973 and November, 1976 is presented. Following initial good results, problems have been encountered with the passage of time. Complications due to design faults, selection, and technical pitfalls are analysed. Patients who have grossly unstable and deformed knees are not suitable for this type of prosthesis. The high density polyethylene central flange in the tibial component is not strong enough to withstand valgus or varus forces. Full correction of valgus, varus, or flexion deformities is essential if late complications are to be avoided. Associated external rotation deformities in grossly valgus knees have to be fully corrected to prevent late dislocation of the patella. Our conclusion is that at present there is a place for both the hinged and hingeless type of prosthesis in total knee replacement.
本文回顾了1973年8月至1976年11月间对42例患者的50个膝关节进行手术的情况。术后初期效果良好，但随着时间推移出现了一些问题。分析了因设计缺陷、选择不当和技术失误导致的并发症。膝关节严重不稳定和畸形的患者不适合使用这种类型的假体。胫骨部件中的高密度聚乙烯中央凸缘强度不足以承受外翻或内翻力。若要避免晚期并发症，必须完全矫正外翻、内翻或屈曲畸形。严重外翻膝关节合并的外旋畸形必须完全矫正，以防止髌骨晚期脱位。我们的结论是，目前在全膝关节置换中，铰链式和非铰链式假体都有其应用价值。
