Arazpour Mokhtar, Ahmadi Bani Monireh, Baniasad Mina, Samadian Mohammad, Golchin Navid
a Pediatric Neurorehabilitation Research Center , University of Social Welfare and Rehabilitation Sciences , Tehran , Iran.
b Iranian Research Center on Aging , University of Social Welfare and Rehabilitation Sciences , Tehran , Iran.
Disabil Rehabil Assist Technol. 2018 Apr;13(3):226-233. doi: 10.1080/17483107.2017.1306591. Epub 2017 Mar 28.
Most currently-available stance control knee ankle foot orthoses (SCKAFOs) still need full knee extension to lock the knee joint, and they are still noisy, bulky, and heavy. Therefore, the aim of this study was to design, construct, and evaluate an original electromechanical SCKAFO knee joint that could feasibly solve these problems, and thus address the problems of current stance control knee joints with regards to their structure, function, cosmesis, and cost.
Ten able-bodied (AB) participants and two (knee ankle foot orthosis) KAFO users were recruited to participate in the study. A custom SCKAFO with the same set of components was constructed for each participant. Lower limb kinematics were captured using a 6-camera, video-based motion analysis system.
For AB participants, significant differences were found between normal walking and walking with the SCKAFO for temporal-spatial parameters and between orthoses with two modes of knee joints in the healthy subjects. Walking with stance control mode produced greater walking speed and step length, greater knee flexion during swing, and less pelvic obliquity than walking with a locked knee, for both AB and KAFO users.
The feasibility of this new knee joint with AB people was demonstrated. Implications for rehabilitation Stance control knee ankle foot orthoses (SCKAFOs) are designed to stop knee flexion in stance phase and provide free knee movement during swing phase of walking. Due to their high cost, size, excessive weight, and poor performance, few SCKAFO were optimal clinically and commercially. The feasibility of the new knee joint with able-bodied people and poliomyelitis subjects was demonstrated.
目前大多数可用的站立控制型膝踝足矫形器（SCKAFO）仍需完全伸直膝关节来锁定关节，而且它们仍然存在噪音大、体积大且重量重的问题。因此，本研究的目的是设计、制造并评估一种原创的机电式SCKAFO膝关节，该膝关节能够切实解决这些问题，从而在结构、功能、美观及成本方面解决当前站立控制型膝关节存在的问题。
招募了10名身体健全的（AB）参与者和2名（膝踝足矫形器）KAFO使用者参与本研究。为每位参与者定制了一套组件相同的SCKAFO。使用基于视频的6摄像头运动分析系统采集下肢运动学数据。
对于AB参与者，在健康受试者中，正常行走与佩戴SCKAFO行走时的时空参数之间以及两种膝关节模式的矫形器之间存在显著差异。对于AB参与者和KAFO使用者，与锁定膝关节行走相比，采用站立控制模式行走时步行速度和步长更大，摆动期膝关节屈曲角度更大，骨盆倾斜度更小。
证明了这种新型膝关节在AB人群中的可行性。康复意义 站立控制型膝踝足矫形器（SCKAFO）旨在在站立期阻止膝关节屈曲，并在步行摆动期提供膝关节自由活动。由于其成本高、尺寸大、重量过大及性能不佳，临床上和商业上很少有SCKAFO是最佳选择。证明了新型膝关节在身体健全者和小儿麻痹症患者中的可行性。
