A RIGID BODY DATABASE ON NORMAL GAIT

步态分析的目的是确定一个人的行走模式和 身体使用的神经肌肉策略来产生观察到的 有动静。一个计算机化的摄像系统测量运动 花纹和特殊的平台内置在地板上，测量作用力 站起来。从测量的运动和力来看，机械功 在行走过程中身体所做的事情是可以估计的。当前的技术 用于近似功过度简化的身体模型及其 移动，并在估计中引入误差。我们的目的是 研究是为了研究更复杂的身体模型，以了解如何 这些模型会影响机械功估计。20例正常人的一项研究 受试者检查了步态中脚踝关节所做的工作 已被接受出版。这项研究采用了一种更复杂的 踝关节模型，并包括其他术语，以前 忽略，在机械功计算中。另一项研究目前 正在进行的将检查在膝关节所做的工作相同的十 研究对象。最后，对另外15名受试者进行的第三项研究表明 足部模型及其在步态中的行为假设 导致对脚所做的功的错误估计。结果是 这些研究有力地表明，这些新方法是必不可少的。 以提高机械工程估算的有效性。这些产品的使用 步态分析中的估计将对康复和 患者群体中的外科治疗计划。

The purpose of gait analysis is to qualify a person's walking pattern and the neuromuscular strategies used by the body to produce the observed movement. A computerized video camera system measures the movement pattern and special platforms built into the floor measure forces acting on the feet. From the measured movements and forces, the mechanical work done by the body during walking can be estimated. Current techniques used to approximate work oversimplify the model of the body and its movements and introduce errors into the estimates. The purpose of our research is to investigate more complex models of the body to learn how these models affect mechanical work estimates. One study of 20 normal subjects that examined the work done at the ankle joint during gait has been accepted for publication. The study employed a more sophisticated model of the ankle joint and included additional terms, previously ignored, in the mechanical work calculations. Another study currently underway will examine the work done at the knee joint of the same ten subjects. Finally, a third study of another 15 subjects suggests the model of the foot and the assumptions made about its behavior during gait result in erroneous estimates of work done by the foot. The results of these studies strongly suggest that these new approaches are essential to improving the validity of mechanical work estimates. The use of these estimates in gait analysis will have implications for rehabilitation and surgical treatment planning in patient populations.