Abstract：
The aim of this study was to analyse the short- and medium-term complications of the Motec total wrist arthroplasty (TWA). Identifying exact modes of failure and their causes should allow surgeons to avoid or mitigate these risks in the future. Retrospective analysis of prospectively collected data from six hand surgeons at five international centres provided details of 171 Motec TWAs. The mean follow-up was 5.8 years (range 18 months to 12 years). There were 33 (19%) complications within our cohort, with a revision rate of 8.2% (14 revisions). There was no difference in complication rates between metal-on-metal and metal-on-polymer articulations. Failure of osseointegration was the most common complication. Problems with soft tissue balancing, implant impingement related osteolysis, bony impingement and metacarpal fracture were found to be other preventable causes of failure in this series. Elimination of these preventable complications will improve survival rates for this implant.Level of evidence: IV.
摘要：
这项研究的目的是分析Motec全腕关节置换术（TWA）的短期和中期并发症。确定确切的故障模式及其原因应允许外科医生在未来避免或减轻这些风险。对来自五个国际中心的六个手外科医生的前瞻性收集数据进行回顾性分析，提供了171个MotecTWAs的详细信息。平均随访5.8年（18个月至12年）。我们队列中有33例(19%)并发症，修订率为8.2%(14次修订)。金属对金属和金属对聚合物关节的并发症发生率没有差异。骨整合失败是最常见的并发症。软组织平衡的问题，植入物撞击相关的骨溶解，骨撞击和掌骨骨折被发现是其他可预防的失败原因。消除这些可预防的并发症将提高这种植入物的存活率。证据级别：IV。
