A study of the external forces and moments at the shoulder and elbow while performing every day tasks
A study of the external forces and moments at the shoulder and elbow while performing every day tasks
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DOI：
10.1016/j.clinbiomech.2004.03.004
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发表时间：
2004-07-01
影响因子：
1.8
通讯作者：
Johnson, GR
中科院分区：
文献类型：
--
作者：
Murray, IA;Johnson, GR
目标。建立上肢运动学和动力学数据库，以支持肩、肘部生物力学模型的建立。研究对象为10名未受损伤的受试者，他们在日常生活中执行10种不同的任务。开发支持全关节置换设计的上肢生物力学模型需要关于通常进行的活动的数据。与下肢不同的是，这涉及到选择据信最常见的任务。使用四个摄像机收集运动学数据，以跟踪附着在上肢和躯干上的反射标记的运动。然后对刚体进行运动学分析，并用逆动力学方法计算出肩部和肘部的外力和力矩。肩部的最大活动范围发生在伸展和举起任务期间，肩部的最大力矩(14.3N m屈曲)也是如此。肘关节最大屈曲发生在到达头部后部时，但最大力矩(5.8Nm)发生在将块抬起到头部高度时。为了支持上肢生物力学模型的开发，已经建立了运动范围和外力和力矩数据库。相关开发支持上肢关节置换设计的生物力学模型需要详细了解关节处的力和力矩的类型和大小。(C)2004爱思唯尔有限公司。保留所有权利。
Objectives. To establish a database of upper limb kinematics and kinetics to support the development of a biomechanical model of the shoulder and elbow.Design. Ten unimpaired subjects were studied when performing 10 different tasks of every day living.Background. The development of biomechanical models of the upper limb to support the design of total joint replacements requires data on the commonly performed activities. Unlike the lower limb, this involves the selection of the tasks believed to be the most common.Methods. Kinematic data were collected using four video cameras to track the movements of reflective markers attached to the upper limb and trunk. The rigid body kinematics was then analysed and the external forces and moments at the shoulder and elbow were calculated using inverse dynamics.Results. The greatest ranges of motion at the shoulder occurred during reaching and lifting tasks as did the greatest shoulder moment (14.3 N m flexion). The greatest elbow flexion occurred while reaching the back of the head but the greatest moment (5.8 N m) occurred while lifting a block to head height.Conclusions. A database of ranges of motion and external forces and moments has been established to support the development of biomechanical models of the upper limb.RelevanceThe development of biomechanical models to support the design of upper limb joint replacements requires detailed knowledge of the types and magnitudes of forces and moments at the joints. (C) 2004 Elsevier Ltd. All rights reserved.