...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Biomechanics >Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression.
【24h】

Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression.

机译：胫骨内扭转或胫股加压导致前交叉韧带损伤。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The knee is one of the most frequently injured joints in the human body. Approximately 91% of ACL injuries occur during sporting activities, usually from a non-contact event. The most common kinetic scenarios related with ACL injuries are internal twisting of the tibia relative to the femur or combined torque and compression during a hard landing. The hypothesis of this study was that the magnitudes and types of motion observed after ACL rupture would significantly change from the relative joint displacements present just before ACL injury. Compression or torsion experiments were conducted on 7 pairs of knee joints with repetitive tests at increasing intensity until catastrophic failure. ACL injury was documented in all cases at 5.4+/-2kN of TF compression or 33+/-13Nm of internal tibial torque. The femur displaced posteriorly relative to the tibia in pre-failure and with a higher magnitude in failure tests under both loading conditions. In compression experiments there was internal rotation of the tibia in pre-failure tests, but external rotation of the tibia after the ACL failed. In torsion experiments, failure occurred at 58+/-19 degrees of internal tibial rotation, and valgus rotation of the femur increased significantly after ACL injury. These new data show that the joint motions can vary in magnitude and direction before and after failure of the ACL. Video-based studies consistently document external rotation of the tibia combined with valgus knee bending as the mechanism of ACL injury although these motions could be occurring after ACL rupture.
机译：膝盖是人体中最容易受伤的关节之一。大约91％的ACL受伤发生在体育活动中，通常是由非接触性事件引起的。与ACL损伤相关的最常见的动力学情况是胫骨相对于股骨的内部扭曲或硬着陆时的扭矩和压缩作用相结合。这项研究的假设是，ACL破裂后观察到的运动幅度和类型将明显不同于ACL损伤前的相对关节位移。对7对膝关节进行压缩或扭转实验，并以不断增加的强度进行重复测试，直到发生灾难性故障。在所有情况下，在5.4 +/- 2kN的TF压缩力或33 +/- 13Nm的胫骨内扭矩下均记录了ACL损伤。股骨在骨折前相对于胫骨向后移位，并且在两种载荷条件下的破裂测试中幅度都更大。在压缩实验中，失效前测试中胫骨的内部旋转，但ACL后胫骨的外部旋转失败。在扭转实验中，ACL损伤后胫骨内部旋转发生于58 +/- 19度，股骨外翻旋转明显增加。这些新数据表明，在ACL发生故障之前和之后，关节运动的幅度和方向可能会有所不同。基于视频的研究一致地记录了胫骨外旋转结合外翻屈膝作为ACL损伤的机制，尽管这些运动可能在ACL破裂后发生。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号