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인공의족의 외반 특성이 하퇴절단자의 무릎과 발목에 미치는 영향
배태수(Tae Soo Bae),장윤희(Yun Hee Chang),김신기(Shin Ki Kim),문무성(Mu Seung Mun) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
One of the important functions of prosthetic foot is the foot inversion-eversion which is so important when walking on uneven surfaces. The aim of our study was to evaluate the effect of foot eversion angle especially on knee and ankle joint for transtibial amputees by motion analysis. The experimental data were collected from three transtibial amputees and then ten healthy individuals. To simulate walking on side sloping ground, we used custom-made slope (5, 10, 15 degrees). Motion analysis was performed by 3-dimensional motion analyzer for 6 dynamic prosthetic feet. The results showed that knee abduction moments of amputated leg were decreased but those of sound leg were mainly increased as foot eversion angle increased. And ankle abduction moments of sound leg were inconsistent in magnitude and tendency between control and experimental group. Therefore foot eversioncharacteristics should be considered to develop advanced prosthetic foot.
슬관절 등속 운동시 하지근육구동모델 모의실험과 임상실험
배태수(Bae Tae Soo†),조현석(Cho Hyeon Seok),강성재(Kang Sung Jae),최경주(Choi Kyong joo),김신기(Kim Shin Ki),문무성(Mun Mu Seong) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
This study validated the musculoskeletal model of the human lower extremity by comparative study<br/> between calculated muscle parameters through simulation using modified hill-type model and measured<br/> them through isokinetic exercise. And the relationship between muscle forces and moments participated<br/> in motion was quantified from the results of simulation. For simulation of isokinetic motion, a<br/> three-dimensional anatomical knee model was constructed using trials of gait analysis and the<br/> EMG-force model was used to determine muscle activation level exciting muscles. The modified<br/> Hill-type model was used to calculate individual muscle forces and moments in dynmaic analysis and<br/> the results were validated by comparing them of experiments on BIODEX. The results showed that<br/> there was a high correlation between calculated torques from simulation and measured them from<br/> experiments for isokinetic motion(R=0.97). Therefore we concluded that the simulation by using<br/> musculoskeletal model was so useful means to predict and convalesce musculoskeletal-related diseases,<br/> and analyze unrealizable experiment such as clash condition.