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標題: 功能性長短腿之生物力學效應模擬與分析
Simulation and Analysis for Functional Leg Length Discrepancy Biomechanical effects.
作者: Chen, Jhih-Wei
關鍵字: gait analysis;步態分析;LLD(leg length discrepancy);LifemMOD;長短腿;LifeMOD
出版社: 生物產業機電工程學系所
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本研究利用vicon mx system和WORKSTATION 5.0擷取功能性長短腿患者及正常個體(subject)之步態資料,並利用模擬軟體ADAMS及人體模組LifeMod,來建立人體模型並模擬正常個體和功能性長短腿病患(FLLD patient)步態。由實驗發現功能性長短腿病患的步態(the gait of FLLD)有不對稱(asymmetric)的現象。功能性長短腿患者,在中立期時(midstance)其長腿側在矢狀面(sagital)上之髖關節力矩(moment)比短腿側多出0.2N-m/kg。但於冠狀面之髖關節力矩為短腿側比長腿側多出0.6 N-m/kg。擺動期長腿側膝關節(knee)彎曲(flexion)角度也比短腿側多出10°,冠狀面上之髖關節內收角度比短腿側多出3°。因此功能性長短腿患者之步態與正常個體比較,功能性長短腿患者步態較不對稱,其長腿側力矩較大,而正常個體其步態較對稱,其髖關節及膝關節之力矩於矢狀面及冠狀面差異也較小。

The study made use of computer hardware: vicon mx system and software :workstatiom 5.0 to pick up the gait data, from the normal subject and patients of functional leg length discrepancy(FLLD). This research used the simulate software :ADAMS and LifeMOD to establish the model and simulate the gait. The results represented the patients of FLLD have an asymmetric gait . At midstance, the FLLD patients' hip joint moment of longer limb in sagital plane is 0.2N-m/kg higher than opposite one. However, the hip joint moment of shorter limbs in frontal planes are 0.6N-m/kg higher than opposite ones. At swing phase, when knee flexion, the longer side joint have 10 higher than shorter side, and more than 3 adduction in frontal plane. Hence, comparing the gait of FLLD with normal subjects; we found the gaits of FLLD are more asymmetric and had a larger moment on the longer limb. The hip and the knee joint moment of normal subjects on sagital and frontal planes are smaller than FLLD one's.
其他識別: U0005-2508200623395900
Appears in Collections:生物產業機電工程學系

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