Chu C M, Wang S J, Lin L C
Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China.
J Arthroplasty. 2001 Sep;16(6):806-9. doi: 10.1054/arth.2001.24448.
Modular component dissociation is a potential problem of current modular total hip arthroplasty (THA) systems. We describe a case of dissociation of the modular THA at the femoral head-neck interface after loosening of the acetabular shell during closed reduction for posterior dislocation of THA. The causes of this dissociation and acetabular shell loosening are discussed. Successful treatment was provided with surgical revision of the acetabular and the femoral head components. The present case serves as a graphic reminder that the acetabular shell overhanging the acetabular bone must be avoided when implanting modular THA components.
模块化组件分离是当前模块化全髋关节置换术（THA）系统的一个潜在问题。我们描述了一例在THA后脱位闭合复位过程中髋臼杯松动后，模块化THA在股骨头-颈界面处发生分离的病例。讨论了这种分离和髋臼杯松动的原因。通过对髋臼和股骨头组件进行手术翻修成功完成了治疗。本病例直观地提醒我们，在植入模块化THA组件时，必须避免髋臼杯悬于髋臼骨上方。
