Tabernig Carolina B, Cherniz Analia S, Escobar Sergio O
Faculty of Engineering, Bioengineering, University of Entre Ríos, Entre Rios, Argentina.
Int J Rehabil Res. 2007 Sep;30(3):249-53. doi: 10.1097/MRR.0b013e3282bdb742.
BiosStep is a functional neuromuscular stimulation system designed to assist the gait of people with central nervous system injuries. It stimulates the quadriceps during the stance phase and the nerves in the popliteal space to produce the swing phase of the gait cycle. The gait obtained with BiosStep was assessed using kinematic analysis and it was compared with nondisabled gait. Moreover, the evolution of the physiological cost of walking using BiosStep was evaluated and compared with the gait obtained with mechanical orthoses. The kinematic analysis of the three lower limb joints showed that the angular excursion morphologies of BiosStep-assisted gait were similar to those obtained in healthy gait, but with minor amplitudes. The physiological cost indexes for the BiosStep-assisted gait were higher than those computed for the mechanical-orthoses-assisted gait. Results show the necessity to continue improving the strategies to obtain more functional movements and enhance the training of patients.
BiosStep是一种功能性神经肌肉刺激系统，旨在辅助中枢神经系统损伤患者的步态。它在站立期刺激股四头肌，在腘窝间隙刺激神经，以产生步态周期的摆动期。使用运动学分析评估了通过BiosStep获得的步态，并将其与非残疾步态进行了比较。此外，评估了使用BiosStep行走的生理成本的变化，并将其与使用机械矫形器获得的步态进行了比较。对三个下肢关节的运动学分析表明，BiosStep辅助步态的角位移形态与健康步态相似，但幅度较小。BiosStep辅助步态的生理成本指数高于机械矫形器辅助步态计算得出的指数。结果表明，有必要继续改进策略以获得更多功能性运动并加强对患者的训练。
