Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation
碩士 === 國立陽明大學 === 物理治療暨輔助科技學系 === 98 === Due to lose function of the ankle joint and foot, people with below-knee amputation exhibit abnormal gait and consequently affect biomechanics performance. The asymmetry gait predisposes to cause secondary disorders such as osteoarthritis, osteoporosis, and l...
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ndltd-TW-098YM0055950112015-10-13T18:49:18Z http://ndltd.ncl.edu.tw/handle/57375890309127627474 Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation 利用數學模型分析膝下截肢者之關節受力 Yu-Cheng Hung 洪友誠 碩士 國立陽明大學 物理治療暨輔助科技學系 98 Due to lose function of the ankle joint and foot, people with below-knee amputation exhibit abnormal gait and consequently affect biomechanics performance. The asymmetry gait predisposes to cause secondary disorders such as osteoarthritis, osteoporosis, and low-back disease on them after prolonged walking. To obtain normal gait for people with below-knee amputation, the expensive, keel made by elastic carbon fiber prosthetic foot, “Flex-Foot”, was developed. However, there’s limited evidence showed the effects on joint forces from knee to low-back joint between the Flex-Foot and the SACH foot. To investigate the differences on ground reaction forces and joint forces from knee to low-back between normal people and people with below-knee amputation with different prosthetic foot, this study conducted a software Matlab and mathematical model to analyze biomechanics from knee to low-back joint force for people with below-knee amputation with self-selected speed. We also used force plates and motion-analysis system for gathering data to compare the differences of ground reaction force, the knee, hip, and L5/S1 joint forces. We also recruited a normal subject as a comparison. The result indicated that people with below-knee amputation have higher vertical forces in ground reaction force, knee joint, and hip joint force on the sound limb than the affected limb. People with below-knee amputation also suffered larger medial-lateral vibration and joint force in L5/S1 joint. Additionally, they would use the forward forces by hip and L5/S1 joint to compensate the lacked, push-forward forces made by ankle and foot. In the different effects on prosthetic foot, wearing Flex-Foot made the lower limbs’ forces more symmetry, and it also decreased peak joint forces and vibration in vertical and antero-posterior direction in L5/S1 joint during walking. According to the results, the joint forces of people with below-knee amputation were different from the normal people, and wearing Flex-Foot would make bilateral lower limb joint forces more symmetry and decrease forces in L5/S1 joint. Chen-Sheng Chen 陳振昇 2010 學位論文 ; thesis 105 zh-TW |
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碩士 === 國立陽明大學 === 物理治療暨輔助科技學系 === 98 === Due to lose function of the ankle joint and foot, people with below-knee amputation exhibit abnormal gait and consequently affect biomechanics performance. The asymmetry gait predisposes to cause secondary disorders such as osteoarthritis, osteoporosis, and low-back disease on them after prolonged walking. To obtain normal gait for people with below-knee amputation, the expensive, keel made by elastic carbon fiber prosthetic foot, “Flex-Foot”, was developed. However, there’s limited evidence showed the effects on joint forces from knee to low-back joint between the Flex-Foot and the SACH foot.
To investigate the differences on ground reaction forces and joint forces from knee to low-back between normal people and people with below-knee amputation with different prosthetic foot, this study conducted a software Matlab and mathematical model to analyze biomechanics from knee to low-back joint force for people with below-knee amputation with self-selected speed. We also used force plates and motion-analysis system for gathering data to compare the differences of ground reaction force, the knee, hip, and L5/S1 joint forces. We also recruited a normal subject as a comparison.
The result indicated that people with below-knee amputation have higher vertical forces in ground reaction force, knee joint, and hip joint force on the sound limb than the affected limb. People with below-knee amputation also suffered larger medial-lateral vibration and joint force in L5/S1 joint. Additionally, they would use the forward forces by hip and L5/S1 joint to compensate the lacked, push-forward forces made by ankle and foot. In the different effects on prosthetic foot, wearing Flex-Foot made the lower limbs’ forces more symmetry, and it also decreased peak joint forces and vibration in vertical and antero-posterior direction in L5/S1 joint during walking.
According to the results, the joint forces of people with below-knee amputation were different from the normal people, and wearing Flex-Foot would make bilateral lower limb joint forces more symmetry and decrease forces in L5/S1 joint.
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author2 |
Chen-Sheng Chen |
author_facet |
Chen-Sheng Chen Yu-Cheng Hung 洪友誠 |
author |
Yu-Cheng Hung 洪友誠 |
spellingShingle |
Yu-Cheng Hung 洪友誠 Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation |
author_sort |
Yu-Cheng Hung |
title |
Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation |
title_short |
Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation |
title_full |
Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation |
title_fullStr |
Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation |
title_full_unstemmed |
Using a Mathematical Model to Analyze Joint Forces of People with Below-Knee Amputation |
title_sort |
using a mathematical model to analyze joint forces of people with below-knee amputation |
publishDate |
2010 |
url |
http://ndltd.ncl.edu.tw/handle/57375890309127627474 |
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