Kim Sangrim, Yang Joseph, Moon Seokhwan, Choi Sungwook
Department of Orthopaedic Surgery, Jeju National University Hospital, School of Medicine, Jeju National University, Jeju 63241, Republic of Korea.
Harrow School, 5 High Street, Harrow on the Hill, Middlesex, London HA1 3HP, UK.
Life (Basel). 2024 Oct 21;14(10):1344. doi: 10.3390/life14101344.
Mobile-bearing (MB) total knee arthroplasty (TKA) implants were introduced as an alternative to fixed-bearing (FB) implants because of their theoretical advantages related to femorotibial rotational mismatch. The purpose of this study is to compare the clinical and radiologic outcomes of MB and FB TKA after approximately 13 years of follow-up. We compared the results of 88 patients with a mean age of 66 years who had received a rotating platform MB implant or a FB implant. The mean follow-up was 13.6 years. The patients were assessed clinically (VAS, ROM, KSS, WOMAC scores) and radiographically before and 13 years after operation. There were no statistically significant differences between the FB and MB groups in terms of clinical outcomes and radiological outcomes ( > 0.05 for all). Although the incidence of complications was higher in the MB group, the findings were not statistically significant compared to the FB group ( > 0.05 for all). Although there were no significant differences in the clinical and radiologic outcomes between the FB and MB groups, the possible higher risk of osteolysis or aseptic loosening in the MB group could be an important clinical implication when selecting the TKA implant.
活动平台（MB）全膝关节置换术（TKA）植入物作为固定平台（FB）植入物的替代方案被引入，因为其在股骨胫骨旋转不匹配方面具有理论优势。本研究的目的是比较随访约13年后MB和FB TKA的临床和放射学结果。我们比较了88例平均年龄66岁的患者的结果，这些患者接受了旋转平台MB植入物或FB植入物。平均随访时间为13.6年。在术前和术后13年对患者进行临床评估（视觉模拟评分法、活动度、膝关节协会评分、西安大略和麦克马斯特大学骨关节炎指数评分）和影像学评估。FB组和MB组在临床结果和放射学结果方面无统计学显著差异（所有P>0.05）。虽然MB组并发症发生率较高，但与FB组相比，差异无统计学意义（所有P>0.05）。虽然FB组和MB组在临床和放射学结果方面无显著差异，但MB组可能存在的更高的骨溶解或无菌性松动风险在选择TKA植入物时可能具有重要的临床意义。
