SKELETAL TRACKING WITH SKELETAL FIXATION

步态分析在临床环境中的使用已成为 范围很广。对患者行走方式的评估 需要将光学靶标附着在皮肤上 浮出水面。从监测位置获得的数据 这些指标在患者行走时提供了基础 目的人体运动研究。在评估这些方面 数据，假设目标位置表明 骨骼位置通常被忽略。目的 这项研究是为了评估产生的误差的大小 通过使用皮肤包裹的目标追踪骨骼系统。 到目前为止，三名受试者的步态已经被测试使用 固定在小腿上的表面和骨骼安装靶。这个 结果表明，运动误差主要是由运动误差引起的 围绕和沿着小腿的长轴。的确如此。 考虑到这些错误，对其进行建模似乎是不可行的 只考虑软组织的被动运动。 与标准步态相关的误差的量化 分析程序是测试的重要组成部分 验证过程。这项研究的结果将有一个 对临床步态分析的未来产生重大影响。

The use of gait analysis in clinical settings has become wide spread. Evaluation of a patient's walking pattern requires the attachment of optical targets to the skin's surface. Data derived from monitoring the location of these targets while the patient walks provide the basis for objective human movement studies. In evaluating these data, the assumption that target positions indicate skeletal position is routinely ignored. The purpose of this study is to evaluate the magnitude of error produced by tracking the skeletal system using skin mounted targets. To date, the gait of three subjects has been tested using surface and bone mounted targets affixed to the shank. The results indicate that kinematic errors occur primarily about and along the long axis of the lower leg. It does not appear feasible to model these errors taking into account only the passive motion of soft tissue. Quantification of the errors associated with standard gait analysis procedures is an important component of the test validation process. The results of this study will have a significant impact on the future of clinical gait analysis.