Biomechanics of Prosthetic Walking

这个项目的目的是更好地了解假肢行走的生物力学。超声波，肌电图和压力测量的假肢接受腔中的应用监测假肢控制，特别是在各种地形条件下的膝盖以上截肢者的残肢和接受腔之间的相互作用。生物力学模型，这是常用的仪器在临床上的三维步态分析，并用于计算逆动力学将被修改为一个现实的机械假肢模型和一个额外的弹簧关节的腿链，它描述了残肢和假肢插座之间的相互作用的影响。通过该程序，可以确定在剩余解剖髋关节和残肢上行走时的实际载荷。将研究目前市场上的各种传统碳弹簧脚和机械或微处理器控制的膝关节的反作用，作为这种方法的医学评价的例子。下一步，将研究假肢接受腔形式的生物力学影响，从而找到一种方法，能够对包括足部、膝部以及可能的工业化假肢接受腔在内的完整假肢进行创新性的、面向患者和实践的评估。考虑到新颖的、通常是微处理器控制的和部分致动的假肢组件的急剧发展的市场，这是为了假肢的未来发展，因此是为了特别重要的腿部截肢患者的护理。

The aim of this project is a better understanding of the biomechanics of prosthetic walking. Ultrasound, EMG, and pressure measurements in the prosthetic socket are applied for monitoring the prosthesis control and specifically the interaction between stump and socket in above-knee amputees in various terrain conditions. The biomechanical model which is commonly used in instrumented 3D-gait analysis in the clinical context and which serves to compute the inverse dynamics will be modified on the affected side to a realistic mechanical prosthesis model and an additional spring joint in the leg chain, which describes the interaction between the stump and the prosthesis socket. With this procedure it will be possible to determine realistic loads while walking on the remaining anatomical hip and on the stump. The retro-action of various conventional carbon spring feet and mechanical or microprocessor-controlled knee joints which are currently market will be studied as examples of this method for a medical evaluation. In a further step, the biomechanical impact of the prosthesis socket form is to be investigated.As a result, should a methodology will be available which enables innovative patient- and practice-oriented evaluation of the complete prosthesis including the foot, the knee and possibly also an industrially manufactured prosthesis socket. Given the dramatically evolving market of novel, often microprocessor controlled and partially-actuated prosthetic components, this is for the future development of prostheses and thus for the care of people with leg amputation of extraordinary importance.