Meftah Morteza, Ebrahimpour Prouskeh Bruce, He Chuan, Ranawat Amar S, Ranawat Chitranjan S
Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York 10021, USA.
Orthopedics. 2011 Jun 14;34(6):133. doi: 10.3928/01477447-20110427-08.
Data are limited regarding large ceramic femoral heads with highly cross-linked polyethylene. We hypothesized that large ceramic head articulation with highly cross-linked polyethylene is safe with a low wear rate, comparable to metal-on-highly cross-linked polyethylene.The study group comprised 63 patients (72 hips) who had undergone total hip replacement (THR) with ceramic-on-highly cross-linked polyethylene between April 2006 and March 2007 with a minimum 2-year follow-up. Postoperative Western Ontario and Mc-Master Universities Arthritis Index (WOMAC) and Hospital for Special Surgery (HSS) scores were used for clinical assessment. Six-week and 2-year radiographs were analyzed by 2 independent observers using Roman 1.70 software. Twenty-six patients (29 hips) had 32-mm and 37 patients (43 hips) had 36-mm Biolox delta ceramic femoral heads (Ceramtec, Plochingen, Germany). Mean patient age was 60.9 ± 8.9 years, and mean follow-up was 2.9 ± 0.5 years. Mean postoperative WOMAC and HSS hip scores were 30.4 and 36.6, respectively. Mean wear at 1 and 2 years postoperatively was 0.06 ± 0.28 and 0.006 ± 0.12 mm/yr for all hips, respectively. Mean wear at 1 and 2 years postoperatively for the 32-mm femoral head was 0.063 ± 0.278 and 0.007 ± 0.126 mm/yr, respectively, and for the 36-mm femoral head was 0.057 ± 0.292 and 0.006 ± 0.118 mm/yr, respectively. No patient had any clinical complications, such as reoperation, infection, fractures, or radiographic evidence of osteolysis or loosening. The early results of THR with large ceramic heads demonstrate high safety and efficacy. Our data with 2-year follow-up show low wear rates, similar to published data for metal-on-highly cross-linked polyethylene.
关于大尺寸陶瓷股骨头与高交联聚乙烯的数据有限。我们假设大尺寸陶瓷股骨头与高交联聚乙烯的关节置换安全性高、磨损率低，与金属对高交联聚乙烯相当。研究组包括63例患者（72髋），他们于2006年4月至2007年3月间接受了陶瓷对高交联聚乙烯全髋关节置换术（THR），并进行了至少2年的随访。采用术后西安大略和麦克马斯特大学关节炎指数（WOMAC）以及特种外科医院（HSS）评分进行临床评估。由2名独立观察者使用Roman 1.70软件分析术后6周和2年的X线片。26例患者（29髋）使用32毫米的，37例患者（43髋）使用36毫米的Biolox delta陶瓷股骨头（德国普洛兴根的Ceramtec公司）。患者平均年龄为60.9±8.9岁，平均随访时间为2.9±0.5年。术后WOMAC和HSS髋关节平均评分分别为30.4和36.6。所有髋关节术后1年和2年的平均磨损分别为0.06±0.28和0.006±0.12毫米/年。32毫米股骨头术后1年和2年的平均磨损分别为0.063±0.278和0.007±0.126毫米/年，36毫米股骨头分别为0.057±0.292和0.006±0.118毫米/年。没有患者出现任何临床并发症，如再次手术、感染、骨折，或骨溶解或松动的影像学证据。大尺寸陶瓷股骨头全髋关节置换术的早期结果显示出高安全性和有效性。我们2年随访的数据显示磨损率低，与已发表的金属对高交联聚乙烯的数据相似。
