Ledoux E D, Lawson B E, Shultz A H, Bartlett H L, Goldfarb M
Annu Int Conf IEEE Eng Med Biol Soc. 2015;2015:5307-10. doi: 10.1109/EMBC.2015.7319589.
This paper evaluates the effectiveness of a powered knee and ankle prosthesis for stair ascent through a metabolic assessment comparing energy expenditure of a single transfemoral amputee subject while ascending stairs with the powered prosthesis relative to his passive daily use device, as well as comparing the kinematics and kinetics obtained with the passive prosthesis to healthy biomechanics. The subject wore a portable system that measured pulmonary gaseous exchange rates of oxygen and carbon dioxide while he ascended stairs with each of the prostheses in alternating tests. The results indicated that the amputee's energy expenditure decreased by 32 percent while climbing with the powered prosthesis as compared to his passive one, and the kinematics and kinetics achieved were representative of healthy biomechanics.
本文通过代谢评估，比较一名单侧经股骨截肢者使用动力膝关节和踝关节假肢上楼梯时的能量消耗与其日常使用的被动装置的能量消耗，以及将被动假肢获得的运动学和动力学与健康生物力学进行比较，来评估动力膝关节和踝关节假肢在上楼梯方面的有效性。受试者佩戴了一个便携式系统，该系统在他交替使用每种假肢上楼梯时测量氧气和二氧化碳的肺气体交换率。结果表明，与被动假肢相比，截肢者使用动力假肢上楼梯时的能量消耗减少了32%，并且所实现的运动学和动力学表现出健康生物力学的特征。
