移动中间枢纽 (侧滑) 型全膝关节整形手术在麻醉下和承重条件之间表现出不同的运动模式
Osamu Tanifuji1,2, Tomoharu Mochizuki1, Takashi Sato3
1Department of Regenerative and Transplant Medicine, Division of Orthopaedic Surgery, Niigata University Graduate School of Medicine and Dental Science, Niigata, Japan.
概括
分析了移动中枢轴型全膝关节整形术 (MMPTKA) 的动态膝关节动力学. 负载和肌肉活动显著影响了插入运动,这表明在坐等举重活动中稳定性良好.
科学领域:
- 整形外科手术 整形外科手术
- 生物机械工程 生物机械工程
- 医疗设备分析 医疗设备分析
背景情况:
- 移动中枢轴型全膝关节整形手术 (MMPTKA) 结合了中枢轴和移动轴承特征.
- 了解MMPTKA在各种条件下的体内动态动力学对于临床应用至关重要.
- 以前的研究还没有完全阐明MMPTKA.的体内动态行为.
研究的目的:
- 在承重条件和非承重条件下分析MMPTKA的体内动力学.
- 为了比较麻醉下MMPTKA组件的动态运动与坐等功能活动期间的动态运动.
主要方法:
- 一个前性的生物力学案例系列研究,涉及10个膝盖接受了初级MMPTKA.
- 在麻醉下 (全伸展,90度曲,被动全曲) 进行了不承重的横向放射.
- 使用平板探测器和3D到2D图像记录至少在术后6个月分析了承重坐运动.
主要成果:
- 在麻醉下,大腿部部件显示出显著的后部翻译和外部旋转,而插入物则表现出大量的内部旋转.
- 在坐时,大腿部部件的AP转换和旋转减少了,插件显示出最小的外部旋转.
- 在不承重 (麻醉) 和承重 (坐) 条件之间观察到前后翻译和插入旋转的显著差异.
结论:
- 在MMPTKA中插入动力学受到负载和肌肉收缩的显著影响.
- 在麻醉下,大腿部部件的运动可能会促进最佳的运动范围.
- 在承重坐时,MMPTKA表现出良好的稳定性,插件旋转最小,表明合理的动力学.
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