Biomechanics of Prosthetic Walking

这个项目的目的是更好地理解假肢行走的生物力学。超声、肌电图和假体窝的压力测量用于监测假体的控制，特别是在各种地形条件下膝盖以上截肢者的残端和窝之间的相互作用。在临床环境中用于仪器三维步态分析和计算逆动力学的生物力学模型将在患侧修改为逼真的机械假体模型和腿链中的附加弹簧关节，该模型描述残肢与假体窝之间的相互作用。有了这个程序，在剩余的解剖髋关节和残肢上行走时，可以确定实际的负荷。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将作为该方法的医学评估示例进行研究。在进一步的步骤中，将研究假体插座形式的生物力学影响。因此，应该有一种方法，能够对完整的假体进行创新的以患者和实践为导向的评估，包括脚，膝盖，可能还有工业制造的假体插座。鉴于新型的、通常由微处理器控制和部分驱动的假肢组件市场的急剧发展，这对于假肢的未来发展以及对截肢患者的护理具有非凡的重要性。

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.