Yakimovich Terris, Lemaire Edwrad D, Kofman Jonathan
Rehabilitation Centre, Inst. for Rehabilitation Res. & Dev., Ottawa, Ont., Canada.
Conf Proc IEEE Eng Med Biol Soc. 2006;2006:5924-7. doi: 10.1109/IEMBS.2006.259601.
Commercial versions of a stance-control knee-ankle-foot orthosis (SCKAFO) have emerged to improve gait over conventional knee-ankle-foot orthoses (KAFOs), which lock the knee in full extension in individuals with quadriceps muscle weakness. A new electromechanical SCKAFO was recently designed to address the functional, structural, and cost limitations of these commercial SCKAFOs. This paper presents an evaluation of the new SCKAFO conducted to determine its functional and clinical effectiveness during gait. Three healthy adults (100% male; age, 35.3 +/- 19.7y) and three KAFO users with knee extensor weakness in at least one limb (100% male; mean age, 56.3 +/- 4.0y) participated in the study. The SCKAFO had a minimal effect, as desired, on the kinematics of the able-bodied subjects. KAFO users had a mean increase in knee flexion of 21.1 degrees (sd=8.2) during swing, and a greater total knee range of motion when walking with the new SCKAFO compared to their prescribed KAFO. Two KAFO users experienced a reduction in pelvic obliquity and hip abduction angle abnormalities when walking with the SCKAFO compared to their prescribed KAFO.
为改善步态,相较于传统的膝关节-踝关节-足矫形器(KAFO),具有站立控制功能的膝关节-踝关节-足矫形器(SCKAFO)的商业版本应运而生,传统KAFO会将股四头肌无力个体的膝关节锁定在完全伸展状态。最近设计了一种新型机电式SCKAFO,以解决这些商业SCKAFO在功能、结构和成本方面的局限性。本文介绍了对新型SCKAFO进行的评估,以确定其在步态期间的功能和临床有效性。三名健康成年人(100%为男性;年龄,35.3±19.7岁)和三名至少有一条肢体存在膝伸肌无力的KAFO使用者(100%为男性;平均年龄,56.3±4.0岁)参与了该研究。如预期的那样,SCKAFO对身体健全受试者的运动学影响极小。KAFO使用者在摆动期膝关节屈曲平均增加21.1度(标准差=8.2),与他们使用的定制KAFO相比,使用新型SCKAFO行走时膝关节的总活动范围更大。与他们使用的定制KAFO相比,两名KAFO使用者在使用SCKAFO行走时骨盆倾斜度和髋关节外展角度异常有所减轻。