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Study of gait rehabilitation of hemiplegic patients in early stage of rehabilitation using ankle-foot-orthoses

踝足矫形器对偏瘫患者早期康复步态的研究

基本信息

批准号：
11835006
负责人：
YAMAMOTO Sumiko
金额：
$ 2.11万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11835006/
关键词：
hemiplegic patients Ankle-Foot-Orthosis Gait analysis Early stage of rehabilitation

项目摘要

Gait training at the early stage of rehabilitation is quite important for hemiplegic patients. Orthotic assist during gait is indispensable at this stage and the adjustability of functions of AFOs to the condition of each patient is desirable. However, there is no AFO whose function can be changed easily. The purpose of this study is to investigate the function of AFOs for acute hemiplegic patients.A trial AFO was developed and used for the gait training of acute hemiplegic patients. The trial AFO consisted of a spring that produced the assist moment. The range of motion of the ankle joint and magnitude of the dorsiflexion assist moment of the trial AFO could be changed easily. The gaits with AFO were measured by three dimensional gait analysis system (VICON512) and force plates. As results, it was found that the magnitude of assist moment necessary for acute hemiplegic patients was much smaller than for chronic patients. And it was also found that the repulse force of the assist spring was sometimes harmful for acute hemiplegic gait. Based on these results the desirable specification of an AFO for gait training of acute hemiplegic patients was discussed. Oil damper which generates the reaction force to plantarflexion but does not generate the repulse force is second possibility for the assist device of the AFO for acute hemiplegic patients. An AFO with oil damper will be developed in the future.

偏瘫患者康复早期的步态训练是非常重要的。在这个阶段，步态矫正辅助是必不可少的，并且AFO的功能根据每个患者的情况进行调节是可取的。然而，没有一种AFO的功能可以很容易地改变。为探讨AFO对急性偏瘫患者步态训练的作用，研制了AFO试验装置，并将其用于急性偏瘫患者的步态训练。试验AFO由一个产生辅助力矩的弹簧组成。踝关节活动度和踝关节背屈辅助力矩的大小可以很容易地改变。采用三维步态分析系统（VICON 512）和测力板对配戴AFO的步态进行测量。结果发现，急性偏瘫患者所需的辅助力矩的大小远小于慢性患者。同时还发现助力弹簧的斥力对急性偏瘫步态有时是有害的。基于这些结果，讨论了急性偏瘫患者步态训练所需的AFO规格。油阻尼器产生跖屈反作用力而不产生排斥力是急性偏瘫患者AFO辅助装置的第二种可能性。未来还将开发一种带油阻尼器的AFO。