Yakimovich Terris, Kofman Jonathan, Lemaire Edward
Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5, Canada, phone: 613-247-0110; fax: 613-737-4260; (e-mail:
Conf Proc IEEE Eng Med Biol Soc. 2005;2005:2333-40. doi: 10.1109/IEMBS.2005.1616934.
A new electromechanical Stance-Control Knee-Ankle-Foot Orthosis (SCKAFO) was designed to provide improved gait for people with knee-extensor weakness. This SCKAFO inhibits knee flexion at any knee angle while allowing knee extension during weight bearing. During swing or other non-weight bearing activities, the SCKAFO allows free knee motion. A prototype joint was mechanically tested to determine the moment at failure, loading behaviour, and device safety. Quantitative kinematic gait analysis of three able-bodied subjects and three knee-ankle-foot-orthosis (KAFO) users showed that the new SCKAFO had a desired minimal effect on able-bodied walking gait. The SCKAFO permitted a mean increase in sagittal knee motion (488%) during swing for the three KAFO users and a reduction in pelvic obliquity and hip abduction angle abnormalities during terminal stance and swing for two KAFO users.
一种新型机电式站姿控制膝-踝-足矫形器（SCKAFO）被设计用于改善膝伸肌无力患者的步态。这种SCKAFO在任何膝关节角度都能抑制膝关节屈曲，同时在负重时允许膝关节伸展。在摆动期或其他非负重活动期间，SCKAFO允许膝关节自由活动。对一个原型关节进行了力学测试，以确定其失效力矩、加载行为和设备安全性。对三名健全受试者和三名膝-踝-足矫形器（KAFO）使用者进行的定量运动步态分析表明，新型SCKAFO对健全人的行走步态影响极小。对于三名KAFO使用者，SCKAFO使摆动期矢状面膝关节运动平均增加了488%，对于两名KAFO使用者，在终末站立期和摆动期减少了骨盆倾斜和髋关节外展角度异常。
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