André S, Feuilhade de Chauvin P, Tiberi F, Postel M
Rev Chir Orthop Reparatrice Appar Mot. 1983;69(6):447-53.
The authors have observed 82 dislocations in a series of 4833 total hip prostheses of the Charnley or modified Charnley type. This represents 1.7 p. 100 of the cases. In 26 instances, the hip dislocated only once. In other instances, the dislocation became recurrent. Several factors favoured the incidence of dislocation and could be corrected - malposition of the prosthetic components as shown in radiographs, leverage due to ossification or hypertrophic synovium, and non-union after division of the greater trochanter. In 17 instances, no reason could be found except muscle atrophy. This type of case was difficult to treat and continued to dislocate later.
作者在一组4833例Charnley型或改良Charnley型全髋关节假体中观察到82例脱位。这占病例总数的1.7%。26例中，髋关节仅脱位一次。在其他病例中，脱位复发。有几个因素促使脱位发生率升高且可以纠正——X线片显示的假体部件位置不当、骨化或肥厚滑膜导致的杠杆作用以及大转子劈开后的不愈合。17例中，除肌肉萎缩外未发现其他原因。这类病例治疗困难，后期仍会继续脱位。
