Möllers M, Stedtfeld H W, Paechtner S, Wald A
Fachabteilung Unfallchirurgie, Klinikum Nürnberg.
Unfallchirurg. 1992 May;95(5):224-9.
In femoral neck fractures in the elderly, the least traumatic operative treatment is hemiarthroplasty. In our Trauma Unit, from August 1986 to December 1986 we implanted 22 concentric bipolar cups. During follow-up this cup proved to be associated with an unjustifiably high failure rate: system-caused interprosthetic dislocation in 4 patients (18%), and extraprosthetic dislocation in a further 3 (13%). In one of the latter, interprosthetic disconnection occurred during closed reduction. In all of these, i.e., in 31% out of the 22 patients, conversion to a total hip arthroplasty became necessary. Since March 1987 we have used a positive eccentric, self-centering bipolar head. Up to September 1990 322 such prostheses were implanted. Bearing in mind the reduced general physical condition of the patients, the complication rate is considered to be low (dislocations 3.4%, conversion to total hip arthroplasty 0.9%, deep wound infections 3.1%).
对于老年股骨颈骨折，创伤最小的手术治疗方法是半髋关节置换术。在我们的创伤科，1986年8月至1986年12月期间我们植入了22个同心双极髋臼杯。在随访过程中，这种髋臼杯被证明与过高的失败率相关：4例患者（18%）出现假体系统导致的关节内脱位，另有3例（13%）出现假体周围脱位。其中1例在闭合复位过程中发生了假体间分离。在所有这些病例中，即在22例患者中的31%，有必要转为全髋关节置换术。自1987年3月以来，我们使用了一种带正偏距、自定心的双极股骨头。截至1990年9月，共植入了322个这样的假体。考虑到患者总体身体状况较差，并发症发生率被认为较低（脱位3.4%，转为全髋关节置换术0.9%，深部伤口感染3.1%）。
