Kim Young-Hoo, Park Jang-Won, Kulkarni Sourabh S, Kim Yoon-Hong
The Joint Replacement Center, Ewha Womans University School of Medicine, Seoul, Republic of Korea,
Int Orthop. 2013 Nov;37(11):2131-7. doi: 10.1007/s00264-013-2036-9. Epub 2013 Aug 3.
Very few studies have compared alumina-on-alumina ceramic and alumina-on-highly cross-linked polyethylene bearings in the same patient. The purpose of this prospective randomised study was to compare the clinical and radiographic results and the prevalence of osteolysis in cementless total hip arthroplasty using an alumina-on-alumina and alumina-on-highly cross-linked polyethylene bearings in young active patients.
We prospectively compared the results of 100 patients (200 hips) who had undergone a cementless total hip arthroplasty with an alumina-on-alumina ceramic bearing in one hip and an alumina-on-highly cross-linked polyethylene in the other. There were 66 men and 34 women with a mean age of 45.3 years (range, 21-49 years) at the time of surgery. The mean follow-up was 12.4 years (range, 11-13 years). The patients were assessed clinically and radiographically at three months, one year, and annually thereafter.
Harris hip, Western Ontario and McMaster Universities Osteoarthritis Index, and University of California, Los Angeles activity scores did not show statistically significant differences between the two groups of bearings preoperatively or at the time of final follow-up. Radiographic findings of the component were not significantly different between the two groups. The mean polyethylene linear penetration was 0.031 ± 0.004 mm per year. No hips in either group displayed osteolysis. The Kaplan-Meier survivorship with revision as the end point at 12.4 years was 100% (95% confidence interval [CI], 94-100%) for the femoral component in both groups and 99% (95%CI, 93-100%) for the acetabular component.
The clinical and radiographic results of using an alumina-on-alumina ceramic and alumina-on-highly cross-linked polyethylene bearings were similar.
极少有研究在同一患者中比较氧化铝对氧化铝陶瓷轴承和氧化铝对高交联聚乙烯轴承。这项前瞻性随机研究的目的是比较年轻活跃患者采用氧化铝对氧化铝和氧化铝对高交联聚乙烯轴承进行非骨水泥型全髋关节置换术的临床和影像学结果以及骨溶解的发生率。
我们前瞻性地比较了100例患者（200髋）的结果，这些患者一侧髋关节接受了氧化铝对氧化铝陶瓷轴承的非骨水泥型全髋关节置换术，另一侧接受了氧化铝对高交联聚乙烯轴承的置换术。手术时，有66名男性和34名女性，平均年龄45.3岁（范围21 - 49岁）。平均随访时间为12.4年（范围11 - 13年）。在术后3个月、1年及此后每年对患者进行临床和影像学评估。
Harris髋关节评分、西安大略和麦克马斯特大学骨关节炎指数以及加利福尼亚大学洛杉矶分校活动评分在术前或末次随访时两组轴承之间均未显示出统计学上的显著差异。两组之间假体的影像学表现无显著差异。聚乙烯的平均每年线性磨损为0.031±0.004毫米。两组中均无髋关节出现骨溶解。以翻修为终点，两组股骨假体在12.4年时的Kaplan - Meier生存率均为100%（95%置信区间[CI]，94 - 100%），髋臼假体为99%（95%CI，93 - 100%）。
使用氧化铝对氧化铝陶瓷轴承和氧化铝对高交联聚乙烯轴承的临床和影像学结果相似。
