Snorrason F, Kärrholm J, Holmgren C
Department of Orthopaedics, University Hospital, Umeå, Sweden.
J Arthroplasty. 1993 Feb;8(1):83-90. doi: 10.1016/s0883-5403(06)80112-9.
The authors evaluated the fixation of cemented acetabular prostheses in patients with osteoarthritis (20 hips), rheumatoid arthritis (15 hips), and sequelae after fracture of the femoral neck (13 hips) using roentgen stereophotogrammetric analysis. The three-dimensional displacements of the cups were measured during the first 2 postoperative years, and radiographs were examined to assess bone quality, containment, inclination, and area of cement surrounding the cups. There was a greater proportion of migrating cups in patients with rheumatoid arthritis and fracture of the femoral neck compared with osteoarthritis. Patients with poor bone quality according to the modified Engh index, small cement area surrounding the cups, and cups with small inclination displayed increased frequency of migration.
作者采用X线立体摄影测量分析技术，评估了骨关节炎患者（20髋）、类风湿关节炎患者（15髋）以及股骨颈骨折后遗症患者（13髋）中骨水泥型髋臼假体的固定情况。在术后的头两年内测量髋臼杯的三维位移，并通过X线片检查评估骨质量、包容情况、倾斜度以及髋臼杯周围骨水泥的面积。与骨关节炎患者相比，类风湿关节炎患者和股骨颈骨折患者中髋臼杯发生移位的比例更高。根据改良的Engh指数，骨质量差、髋臼杯周围骨水泥面积小以及倾斜度小的髋臼杯移位频率增加。
