慣性センサを用いた臨床座標系基準の膝関節角度測定

抄録

This study describes a new calibration procedure as a simple and accurate method to place and align inertial measurement unit (IMU) sensors with the relative clinical bone frame on a developed lower limb skeletal model. The calibration can be easily replicated without the need for additional tools and, more importantly, independent of the attachment position of sensors. The proposed method was validated under realistic gait tests in eight healthy subjects and in the motion capture system. Calculated results showed that the joint angles were correctly measured after applying the calibration method. Therefore, the proposed calibration procedure is an interesting alternative to solve the alignment problem when using IMU sensor for gait analysis.