Lombardi A V, Engh G A, Volz R G, Albrigo J L, Brainard B J
Anderson Orthopaedic Research Institute, Arlington, Virginia 22206.
J Bone Joint Surg Am. 1988 Jun;70(5):675-9.
We encountered a complication that is unique to the use of a metal-backed patellar component in total knee replacement--namely, fracture and separation of the polyethylene bearing from its metal counterpart. The cases of seventeen patients who were treated at several institutions were studied. Patellar malalignment, especially in heavy patients who had a high level of activity, was a contributory cause of the complication, but we thought that deficiencies in the design of the prosthesis were also an important factor.
我们遇到了全膝关节置换术中使用金属背衬髌骨组件所特有的一种并发症，即聚乙烯衬垫与其金属对应部件发生骨折和分离。我们研究了在多家机构接受治疗的17例患者的病例。髌骨排列不齐，尤其是在活动量较大的肥胖患者中，是导致该并发症的一个促成因素，但我们认为假体设计缺陷也是一个重要因素。
