S161014 身体に取り付けた慣性センサによる腰部脊柱管狭窄症患者の歩行計測([S16101]生物医学工学における計測と制御)

概要

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This study presents a method of walking ability assessment for the patients with lumber spinal stenosis (LSS). The main objective of this paper was to demonstrate fundamental method to illustrate gait feature of LSS patients brought by expression of pain or intermittent claudication. Our method utilized a miniature three-dimensional inertial sensor attaching on the upper trunk. Eight LSS patients who had serious severity of spinal stenosis attended our experimental study at the periods of preoperative, at four weeks, and eight weeks of postoperative. The gait ability was examined by the six minutes walking test shuttling between thirty meters strait corridor in a hospital. Firstly, gait factor was detected by the sensor output, and then three-dimensional rotation angle of the upper body was calculated utilizing Kalman filtering. Only strait walk parts were extracted for the evaluation. Experimental results showed that postoperative subjects were improved mainly in keeping upper body inclination or walking smoothness. The proposed method may useful in quantifying effects and efficacies of treatments for LSS patients.
一般社団法人日本機械学会の論文
2011-09-11