무릎관절의 3차원 회전량 측정을 위한 개선된 외골격 링크장치 형태의 측정기구 개발

Development of a Modified Exoskeletal Linkage Type Instrument for 3-D Motion Measurement of the Human Knee Joint

A new type of electrogoniometer to measure the three dimensional motion of the human knee joint was developed. This instrument is composed of six potentiometers: four arranged for two universal joints, one for pin joint, and one for axial rotation measurement. The voltage change in six potentiometers were collected through A/D converter for acquisition, storage and analysis. With a developed instrument, gait analysis was performed. Compared to earlier developed triaxial type goniometer, new instrument shows its convenience in application and accuracy in measurement.