A RIGID BODY DATABASE ON NORMAL GAIT

步态分析的目的是量化一个人的行走 模式和身体使用的神经肌肉策略 观察到的运动。一种计算机化的摄像系统测量 运动模式，以及嵌入地板的特殊平台 测量脚上的作用力。从测量到的运动和 力，行走过程中身体所做的机械功可以是 估计当前用于近似工作的技术过于简化 身体及其运动的模型，并将误差引入 估计数字。 我们的研究正在研究更复杂的身体模型，以 了解这些模型如何影响机械功估计。一项研究 10名正常受试者检查了在脚踝关节所做的工作 《步态中》一书已经出版。这项研究采用了更多的 复杂的踝关节模型，并包括其他 以前在机械功计算中忽略的术语。 来自另一项研究的数据，该研究检查了在 膝关节，已经完成并提交。第三项研究 涉及15名受试者的研究结果极大地改进了 脚。目前正在进行的一项研究正在调查 在行走的机械上，速度是截然不同的。它是 假设存在两种步行方式而不是连续体 一种单一的行走策略。最后一项研究，即将完成 完成后，评估确定每个角色的新技术 下肢的主要肌群在提供支持方面起着作用 行走时身体的运动和推进。这些研究的结果 研究表明，一个完整的和数字一致的 对人体运动进行力学表征是可行的。这个 这些分析技术在人体评价中的应用 动议将对康复和外科手术产生影响 在患者群体中进行治疗。

The purpose of gait analysis is to quantify a person's walking pattern and the neuromuscular strategies the body uses 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. Our research is investigating more complex models of the body to learn how these models affect mechanical work estimates. One study of 10 normal subjects that examined the work done at the ankle joint during gait has been published. The study employed a more sophisticated model of the ankle joint and included additional terms, previously ignored, in the mechanical work calculations. Data from another study, which examined the mechanical work done at the knee joint, have been completed and presented. A third study involving 15 subjects produced a dramatically improved model of the foot. A study currently under way is investigating the effect of dramatically different speeds on the mechanics of walking. It is hypothesized that two modes of walking exist rather than a continuum of a single walking strategy. A final study, which is near completion, evaluate a new technique for determining the role each major muscle group of the lower extremity plays in providing support to and propulsion of the body during walking. The results of these studies suggest that a complete and numerically consistent mechanical characterization of human movement is feasible. The application of these analytic techniques to the evaluation of human motion will have implications for rehabilitation and surgical treatment in patient populations.