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《Nanotechnology and Precision Engineering》 2015-05
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A Lower Limb Biomechanical Model Without Using Wand-Markers for Motion Analysis During Walking and Running

Ghaffar Muhammad;Raza Syed;Arnold Graham;Abboud Rami;Wang Weijie;Institute of Motion Analysis and Research,Department of Orthopaedic and Trauma Surgery,Tayside Orthopaedics and Rehabilitation Technology Centre,University of Dundee;Department of Biomedical Engineering,NED University of Engineering and Technology;  
Biomechanical models play an important role in motion analysis. Some models routinely used in motion analysis have wand-markers and may bring about errors due to vibrations during movement. This study proposed a lower limb model without using wand-markers which can calculate joint angle,force,moment and power. Twenty-two healthy subjects participated in this study. The proposed model was compared with a traditional model which has wand-markers and is widely used in many clinical gait laboratories in processing running and walking data. Kinematical and kinetic parameters for the hip,knee and ankle were obtained using both models. The results show that the errors produced by high frequency of vibration between the filtered and the raw data from the proposed model are approximately half of those from the traditional model. The analysis of reliability shows that intra-class correlation coefficients are 0. 934 and 0. 960 in running and walking,respectively,using the proposed model while these coefficients are 0. 737 and 0. 916 using the traditional one. The results indicate that being wand-marker free makes the proposed model of better quality in the calculation of kinetic and kinematical parameters than the traditional model. The proposed model could be considered as an improved alternative for the traditional ones in motion analysis of clinical gait and running.
【Fund】: 英国文化学会和巴基斯坦高等教育委员会的英巴知识经济伙伴基金资助项目(KEP-058);; 英国爱丁堡皇家学会和中国国家自然科学基金联合资助项目;; 西班牙科学与创新部基金资助项目(CGL2010-20868)
【CateGory Index】: G804.6
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