Kim Young-Hoo, Kim Jun-Shik
The Joint Replacement Center of Korea, Ewha Woman's University School of Medicine, Seoul, South Korea.
J Arthroplasty. 2009 Sep;24(6):932-40. doi: 10.1016/j.arth.2008.05.005. Epub 2008 Oct 5.
This study aimed to evaluate the clinical and radiographic results and to document the prevalence of osteolysis associated with fixed-bearing (anatomic modular knee) and mobile-bearing (low contact stress) total knee arthroplasties (TKAs) in 61 patients younger than 55 years who had bilateral simultaneous primary TKAs. Forty-five patients were female and 16 patients were male. The mean age of the patients was 48.3 years (range, 34-55 years). The mean postoperative Knee Society knee and functional score were similar in both groups (91 and 90 points and 85 and 86 points, respectively). Three knees (5%) in each group were revised for wear of the tibial bearing, and 1 knee (2%) in the mobile-bearing TKA was revised for dislocation of the meniscal bearing. Osteolysis was identified in both radiographs and computed tomography scans in 6 knees (10%) in the anatomic-modular-knee group and 4 knees (7%) in the low-contact-stress group.
本研究旨在评估61例年龄小于55岁且双侧同时行初次全膝关节置换术（TKA）患者中，固定平台（解剖型模块化膝关节）和活动平台（低接触应力）全膝关节置换术的临床和影像学结果，并记录与之相关的骨溶解发生率。其中45例为女性，16例为男性。患者的平均年龄为48.3岁（范围34 - 55岁）。两组术后膝关节协会膝关节评分和功能评分的平均值相似（分别为91分和90分，85分和86分）。每组各有3例膝关节（5%）因胫骨假体磨损而翻修，活动平台TKA中有1例膝关节（2%）因半月板假体脱位而翻修。解剖型模块化膝关节组6例膝关节（10%）以及低接触应力组4例膝关节（7%）在X线片和计算机断层扫描中均发现骨溶解。
