• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Gait & posture >Propagation of anatomical landmark misplacement to knee kinematics: performance of single and double calibration.
【24h】

Propagation of anatomical landmark misplacement to knee kinematics: performance of single and double calibration.

机译：解剖学界标错位向膝关节运动学的传播：单次和两次校准的性能。

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

Soft tissue artefact and anatomical landmark misplacement have been recognized as the most critical sources of error in gait analysis. The double calibration method was recently proposed to compensate for soft tissue artefact in knee kinematics. This compensation method resulted very effective in the absence of anatomical landmark misplacement. The purpose of the present work was to assess the effectiveness of double calibration in reducing the effects of skin motion artefact on knee rotations and translations when anatomical landmark misplacement is present on the thigh and shank. The double calibration method was used to calculate knee kinematics of two subjects while they performed several motor tasks. The results were compared with those from conventional single calibration. The soft tissue artefact propagated to knee kinematics was quantified by simulating different misplacement errors using both single and double calibration. The double calibration method performed much better than the single calibration one in quantifying knee rotations and particularly translations, with misplacement error up to 15mm superimposed on the anatomical coordinates of the epicondyles. If misplacement errors were limited to just 5mm, the double calibration would be effective in providing kinematics accurate enough for orthopaedic biomechanic applications.
机译：在步态分析中，软组织假象和解剖学界标错位已被认为是错误的最关键来源。最近提出了双重校准方法来补偿膝关节运动学中的软组织伪像。这种补偿方法在没有解剖界标错位的情况下非常有效。本工作的目的是评估双重校准在减少大腿和小腿上解剖学界标错位时皮肤运动伪影对膝盖旋转和平移的影响的有效性。双重校准方法用于计算两个受试者执行多项运动任务时的膝关节运动学。将结果与常规单次校准的结果进行比较。通过使用一次和两次校准模拟不同的错位误差，可以量化传播到膝盖运动学的软组织假象。双重校准方法在定量膝关节旋转尤其是平移方面比单一校准方法表现更好，其错位误差最高达15mm，叠加在上con的解剖坐标上。如果放错误差仅限于5mm，则双重校准将有效地为骨科生物力学应用提供足够准确的运动学。

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