Bueche M J, Herzenberg J E, Stubbs B T
University of Michigan Medical Center, Section of Orthopaedic Surgery, Ann Arbor 48109-0328.
J Arthroplasty. 1989;4(1):39-41. doi: 10.1016/s0883-5403(89)80052-x.
A case of early failure of a total hip arthroplasty presenting as a dislocation is discussed. After failed attempts at closed reduction, an open procedure revealed that the polyethylene insert of the acetabulum had separated from its metal backing. The increasing use of metal-backed acetabular components in total hip arthroplasty produces another mechanical interface that may fail: the metal-polyethylene interface. surgeons should consider this possibility in dislocations of total hip prostheses that cannot be reduced by closed means.
讨论了一例全髋关节置换术早期失败表现为脱位的病例。在尝试闭合复位失败后，开放手术发现髋臼的聚乙烯内衬与其金属背板分离。全髋关节置换术中金属背板髋臼组件的使用增加产生了另一个可能失败的机械界面：金属-聚乙烯界面。对于无法通过闭合方法复位的全髋关节假体脱位，外科医生应考虑这种可能性。
