A Model of Range of Motion of Human Thumbs

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  • 人の母指の可動域表現方法

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<p>In this paper, we proposed a method of modeling the range of motion (ROM) of carpometacarpal (CM) joint of thumbs in vivo. We modeled a CM rotation by the position of metacarpophalangeal (MP) joint and the pronation/supination angle of CM joint. We applied the proposed method to five subjects, and confirmed that this method could model the mechanical features of CM joint. Moreover, we calculated ROM of CM joint by using the method. We showed that the ROM can describe individual differences among multiple subjects. This method will be useful in generation of feasible hand postures, and evaluation of hand rehabilitation status.</p>

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