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首页> 外文期刊>Open Journal of Urology >Mobile Bearing Plate Dislocation in Total Knee Arthroplasty Due to Muscle Spasm: A Case Report
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Mobile Bearing Plate Dislocation in Total Knee Arthroplasty Due to Muscle Spasm: A Case Report

机译：由于肌肉痉挛而在全膝关节置换术中移动承板脱位：一例报告

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摘要

An unusual case of early dislocation of a mobile bearing posterior stabilized total knee arthroplasty in a 48-year-old Caucasian woman is described. Dislocation occurred one day postoperatively, attributed to a gap mismatch. Revision surgery reduced posterior dislocation, increased bearing plate thickness and rebalanced ligaments. A second dislocation occurred after revision surgery. The patient’s history was retaken and a hamstring spasm disease identified. A new revision utilized a more constrained design, without perioperative local nerve block. Two years following surgery, no further dislocation had occurred. A numerical musculoskeletal model of the case and implant configuration identified no trend to mobile bearing dislocation when regular muscle forces were applied. Muscle spasm is a risk factor for mobile bearing total knee arthroplasty dislocation, especially with femoral nerve block.
机译：描述了一个不寻常的案例，该案例描述了一名48岁的白人妇女早期进行的活动性后路稳定全膝关节置换术的脱位。术后一天出现脱位，归因于间隙不匹配。翻修手术减少了后脱位，增加了支承板的厚度并重新平衡了韧带。翻修手术后发生第二次脱位。恢复了患者的病史，发现了a绳肌痉挛病。新的修订版采用了更严格的设计，没有围手术期局部神经阻滞。手术两年后，没有发生进一步的脱臼。病例和植入物配置的数字肌肉骨骼模型没有发现当施加规则的肌肉力时活动性轴承脱位的趋势。肌肉痉挛是导致活动性全膝关节置换术脱位的危险因素，尤其是股神经阻滞时。

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