STATIC FORCE AND STABILITY ANALYSIS OF HUMAN ELBOW

人体肘部静力及稳定性分析

• 批准号: 3155398
• 负责人: KAI-NAN AN
• 金额: $ 14.95万
• 依托单位: MAYO CLINIC ROCHESTER
• 依托单位国家: 美国
• 财政年份: 1979
• 资助国家: 美国
• 起止时间: 1979-12-01 至 1988-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3155398
• 关键词: articular cartilage; biomechanics; clinical biomedical equipment; elbow; electromyography; joint ligament; joint prosthesis; joints; ligaments; mathematical model; mechanical stress; muscle contraction; muscle stress; muscle tension; skeletal stress

The goal of this study is to perform force and stability assessment of the elbow joint. The goal will be accomplished by integrating the results from three closely related studies. Muscle Force and Combined Joint Force will be calculated using an analytic model for ideal loading conditions, as well as activities of daily living. Elbow joint configuration and loading conditions on the forearm of normal subjects during these activities will be measured and this information used as input for force calculation. We propose to complete verification of force results of normal subjects involved in activities of daily living using electromyography. Restraining Functions of Capsules and Ligaments will be obtained using an analytical model based on locations of origin and insertion and material properties of ligaments. Experimental results from stiffness tests under controlled displacements using a material testing machine will be used to provide data and verification of the analytical model. Force on Articular Surfaces will be determined under a wide variety of conditions using an analytic model based on the geometry of the articular surface and ligamentous constraints. Furthermore, pressure distribution on these contact areas will be calculated using the rigid body-spring model analysis. Experimentally, the location of contact area will be determined using silicone casting. Ultimately, this project should provide essential information about elbow biomechanics which can be applied to controversial and unsolved clinical problems: 1) clinical setting in which the radial head or olecranon may be safely excised; 2) anatomical and mechanical features of the diseased joint that dictate the proper selection of a resurfacing or semiconstrained joint replacement device; and 3) relative contribution of the articulation and soft tissues to the mechanism of the most common complication of elbow injury--joint contracture.

本研究的目的是进行力和稳定性评估 肘关节。 该目标将通过整合以下结果来实现 三项密切相关的研究。 肌肉力和联合关节力将使用解析法计算 理想负载条件以及日常生活活动的模型。 肘关节配置和正常前臂的负载情况 这些活动期间的受试者将被测量并使用该信息 作为力计算的输入。 我们建议完成验证 正常受试者参与日常生活活动的力结果 使用肌电图。 胶囊和韧带的约束功能将使用 基于起始位置和插入位置以及材料的分析模型 韧带的特性。 刚度测试的实验结果 使用材料试验机控制位移将用于 提供分析模型的数据和验证。 关节表面上的力将在多种条件下确定 使用基于关节几何形状的分析模型来确定条件 表面和韧带的限制。 此外，压力分布 这些接触面积将使用刚体弹簧模型进行计算 分析。 通过实验，将确定接触区域的位置 使用硅胶铸造。 最终，该项目应提供有关肘部的基本信息 生物力学可应用于有争议和未解决的临床 问题：1) 临床环境中桡骨头或鹰嘴可能 安全切除； 2）病变关节的解剖学和力学特征 决定正确选择重铺或半约束接头 更换装置； 3）关节的相对贡献和 软组织对肘部最常见并发症机制的影响 损伤——关节挛缩。