García-Rey E, García-Cimbrelo E, Cordero-Ampuero J
Orthopaedic Surgery, Hospital La Paz, Madrid, Spain.
J Bone Joint Surg Br. 2009 Mar;91(3):327-32. doi: 10.1302/0301-620X.91B3.20947.
We reviewed 111 hemispherical Duraloc series-500 acetabular components with a minimum follow-up of 12 years. The mean clinical and radiological follow-up was 13.4 years (12 to 15). A Profile hydroxyapatite-coated anatomical femoral component was used in each case. Six patients had a late dislocation, for whom the polyethylene liner was exchanged. Each acetabular component was well fixed and all femoral components showed signs of bone ingrowth. The mean rate of femoral head penetration was 0.10 mm/year (0.021 to 0.481). The probability of not developing femoral cortical hypertrophy and proximal osteopenia by 12 years was 80.2% (95% confidence interval, 72.7 to 87.6) and 77.5% (95% confidence interval, 69.7 to 85.2), respectively. Despite these good clinical results, further follow-up is needed to determine whether these prostheses will loosen with time.
我们回顾了111例半球形Duraloc系列-500髋臼组件，最短随访时间为12年。临床和放射学的平均随访时间为13.4年（12至15年）。每例均使用了轮廓型羟基磷灰石涂层解剖型股骨组件。6例患者出现晚期脱位，对其进行了聚乙烯衬垫更换。每个髋臼组件固定良好，所有股骨组件均显示有骨长入迹象。股骨头平均穿透率为0.10毫米/年（0.021至0.481）。12年时未发生股骨皮质肥厚和近端骨质减少的概率分别为80.2%（95%置信区间，72.7至87.6）和77.5%（95%置信区间，69.7至85.2）。尽管临床结果良好，但仍需要进一步随访以确定这些假体是否会随时间松动。
