ROLLING JOINT PROSTHETIC LEG

第一阶段涉及制造和测试一个滚动关节假肢（RJ腿），包括一个新开发的滚动关节足（RJ足）和滚动关节膝关节（RJ膝关节）。假体滚动关节将显著影响经胫骨和经股骨截肢者的舒适性和独立性，并增加能够佩戴下肢假体的人数，特别是老年人。项目的具体目标。(1)制造RJ膝关节原型，其机制产生与生物膝关节相似的阻力曲线。 (2)机械测试RJ膝关节的站立屈曲，以及RJ足的减震、旋转刚度和外翻/内翻。 (3)对405名佩戴RJ Leg原型的经股（AK）截肢者进行生物力学研究，并将其与现有假体进行比较：膝关节活动范围正常化;残余物和关节窝之间的峰值压力降低。 这将通过在步态的站立阶段期间使假踝和假膝中的运动之间的协同关系正常化来增加假腿的功能。拟议研究的长期目标是：开发一个功能，可靠和经济的假肢模块化系统，和一个系统的组件的协同对齐。拟议的商业应用潜在的商业应用是创建一个产品线的滚动关节脚和膝盖。 RJ Leg将在不增加成本的情况下提高截肢者的性能，从而在假肢康复领域提供极具竞争力的产品。

Phase I involves manufacturing and testing a Rolling Joint Prosthetic Leg (RJ Leg), comprisingly a newly developed Rolling Joint Foot (RJ Foot) and Rolling Joint Knee (RJ Knee). Prosthetic rolling joints will significantly impact the comfort and independence of the transtibial and transfemoral amputees and increase the number of persons, especially elderly, able to wear lower limb prostheses. The specific aims of the project. (1) Manufacture the RJ Knee prototype, which mechanism yields a resistive curve similar to the biological knee joint. (2) Mechanically test stance flexion of the RJ Knee, and shock absorption, rotational stiffness and eversion/inversion of the RJ Foot. (3) Conduct a biomechanical study of 405 transfemoral (AK) amputees wearing a RJ Leg prototype and comparing it to their existing prostheses on: normalizing range of motion in the knee joint; decreased peak pressures between residuum and a socket. This will increase functionality of the leg prosthesis by normalizing the synergetic relationship between the motion in prosthetic ankle and knee during the stance phase of the gait. Long term objectives of the proposed research, are to: develop a functional, reliable and economical prosthetic leg modular system, and a system for synergetic alignment of the components. PROPOSED COMMERCIAL APPLICATION Potential commercial applications is the creation of a product line of Rolling Joint Feet and Knees. The RJ Leg will enhance performance of amputees without increasing cost, thus providing a highly competitive product in the field of prosthetic rehabilitation.