A RIGID BODY DATABASE ON NORMAL GAIT

正常步态的刚体数据库

• 批准号: 3774529
• 负责人: S J STANHOPE
• 金额: --
• 依托单位: CLINICAL CENTER
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/3774529
• 关键词: ankle; balance; biomechanics; computer data analysis; gait; human subject; information systems; knee; model design /development; physical model; video recording system

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.

步态分析的目的是限定一个人的行走模式， 身体用来产生所观察到的神经肌肉策略 运动 一个电脑化的摄像系统测量 模型和特殊平台内置于地板测量力作用 在脚上 从测量的运动和力，机械功 在行走过程中身体所做的动作是可以估计的。 当前技术 用于近似工作，过度简化身体及其 并在估计中引入误差。 我们的目的 研究是调查更复杂的身体模型， 这些模型影响机械功估计。 一项研究20例正常 检查步态期间踝关节所做工作的受试者 被接受出版。 这项研究采用了一种更复杂的 踝关节模型，并包括额外的条款，以前 在计算机械功时忽略。 目前另一项研究 正在进行的将检查在同一十个膝关节所做的工作， 科目 最后，对另外15名受试者的第三项研究表明， 脚的模型和关于其在步态期间的行为的假设 导致对脚所做的功的错误估计。 的结果 这些研究有力地表明，这些新方法是必不可少的， 提高机械功估计的有效性。 使用这些 步态分析中的估计将对康复和 患者人群的手术治疗计划。