Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Correlation Between Joint Angular Displacement and Moment in the Human Foot

인체 족부관절의 각변위와 모멘트의 상관관계

  • 김시열 (성균관대학교, 기계공학부) ;
  • 신성휴 (성균관대학교, 스포츠과학부) ;
  • 황지혜 (성균관대학교 의과대학, 재활의학교실) ;
  • 최현기 (성균관대학교, 기계공학부)
  • Published : 2003.06.01
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Abstract

The goal of this study was to investigate the relationship between kinematic and kinetic characteristics of foot joints resisting ground reaction force. Passive elastic joint moment and angular displacement were obtained from the experiment using 3 cameras and force plate. The relationship between joint angle and moment was mathematically modeled by using least square method. The ranges of motion of joints ranged from 5$^{\circ}$ to 7$^{\circ}$ except metatarsophalangeal joint. In the study, we presented simple mathematical models that could relate joint angle and plantar pressure. From this model, we can got the kinematic data of joints which is not available from conventional motion analysis. Furthermore, the model can be used not only for biomechanical model which simulates gait but also for clinical evaluation.

본 연구에서는 지면반발력에 저항하는 족부관절의 기구학적 특성과 운동학적 특성 사이의 관계를 고찰하는 것을 목적으로 하였다. 관절의 수동탄성모멘트와 각변위는 3대의 카메라와 지면반발력 측정기를 이용한 실험을 통하여 얻어졌다. 최소자승법을 이용하여 관절의 각변위와 모멘트의 상관 관계를 수학적으로 모델링 하였다. 관절의 운동 범위(range of motion)는 중족지절관절(metatarsophalangeal joint)을 제외하고는 5$^{\circ}$~7$^{\circ}$ 값을 보였다. 이 모델을 이용하여 지금까지 일반적인 모션 분석으로부터 측정할 수 없었던 족부관절의 기구학적 데이터를 얻을 수 있다. 더 나아가 이러한 수학적은 보행을 시뮬레이션 하는 생체 역학적 모델과 임상적 평가에도 적용 가능하다.

Keywords

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