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Foot Pressure Feedback Pneumatic Orthosis: Implication of Daily Life Walking Training for Knee Osteoarthritis Patients
International Journal of Precision Engineering and Manufacturing ( IF 1.9 ) Pub Date : 2020-09-04 , DOI: 10.1007/s12541-020-00397-7
Jaewook Kim , Hyun Sik Moon , Song Joo Lee , Jong Min Lee , Shinsuk Park , Seung-Jong Kim

Patients with knee osteoarthritis (KOA) usually experience pain in the medial compartment of their knee which accompany varus postures. This causes much larger lateral-side foot pressure than that of the medial side which may lead to functional limitation in their daily life. Reducing knee loading during gait could help patients with KOA alleviate pain and improve walking functions. In this study, a prototype for a new pneumatic knee orthosis (PKO) is developed to support the knee by increasing the pneumatic pressure of the PKO during the stance period of walking using foot pressure feedback in real time. Force-sensing resistor sensors in the PKO were used to detect the gait phase and monitor the foot pressures in real time. To investigate the feasibility of the system, walking tests on a treadmill were performed at 2 km/h and 3 km/h by healthy subjects. The results show that the developed PKO can reduce lateral-side foot pressure during stance phase. The PKO in this study could be used as a research tool to investigate the relationship between foot pressure and knee loading as well as therapeutic purposes to reduce medial compartment loading in the knee.



中文翻译:

脚压力反馈气动矫形器:对膝骨关节炎患者的日常生活步行训练的意义

患有膝骨关节炎(KOA)的患者通常会在膝关节内侧部发生疼痛,并伴有内翻姿势。这会导致外侧脚的压力比内侧大得多,这可能会导致他们日常生活中的功能受限。减少步态时的膝盖负担可以帮助KOA患者减轻疼痛并改善步行功能。在这项研究中,开发了一种新的气动膝关节矫形器(PKO)的原型,通过使用脚压力反馈实时在行走的站立阶段增加PKO的气压来支持膝盖。PKO中的力感测电阻器传感器用于检测步态相位并实时监控脚部压力。为了研究该系统的可行性,健康受试者在跑步机上以2 km / h和3 km / h的速度进行步行测试。结果表明,开发的PKO可以在站立阶段降低侧足压力。这项研究中的PKO可以用作研究工具,以研究脚压力与膝盖负荷之间的关系,以及减少膝盖内侧腔室负荷的治疗目的。

更新日期:2020-09-05
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