Linde F, Jensen J, Pilgaard S
Biomechanics Laboratory, Orthopaedic Hospital, University of Aarhus, Denmark.
Clin Orthop Relat Res. 1988 Feb;227:164-71.
A follow-up study was made on 129 consecutive Charnley arthroplasties in osteoarthritis secondary to congenital dislocation of the hip. The acetabular component was placed as far distal as possible using a standard technique. Bone grafting was not performed. The survival of the prostheses was assessed by the survivorship method. The cumulative survival rate of the prostheses was 93% after five years, 89% after ten years, and 80% after 15 years. In 77% of the cases the acetabular component had been placed in the true acetabulum or levels the rate of mechanical loosening of the acetabular levels the rate of mechanical loosening of the acetabular component (revisions and acetabular components showing a radiolucent line of increasing width) was 13% compared with 42% in the group where the acetabular component was placed proximal to the roof of the true acetabulum (p less than 0.005).
对129例因先天性髋关节脱位继发骨关节炎而接受Charnley关节成形术的患者进行了随访研究。采用标准技术将髋臼部件尽可能放置在远侧。未进行骨移植。采用生存率法评估假体的生存率。假体的累积生存率在5年后为93%，10年后为89%，15年后为80%。在77%的病例中，髋臼部件被放置在真髋臼或其水平，髋臼部件的机械松动率（翻修和髋臼部件显示放射性透亮线宽度增加）为13%，而髋臼部件放置在真髋臼顶部近端的组中这一比例为42%（p<0.005）。
