A mechanical jig for measuring ankle supination and pronation torque in vitro and in vivo

Abstract This study presents the design of a mechanical jig for evaluating the ankle joint torque on both cadaver and human ankles. Previous study showed that ankle sprain motion was a combination of plantarflexion and inversion. The device allows measurement of ankle supination and pronation torque...

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Bibliographic Details
Published in:Medical engineering & physics 2012-07, Vol.34 (6), p.791-794
Main Authors: Fong, Daniel Tik-Pui, Chung, Mandy Man-Ling, Chan, Yue-Yan, Chan, Kai-Ming
Format: Article
Language:English
Subjects:
Adult
Ankle - physiology
Ankle sprain
Ankle torque measurement
Biological and medical sciences
Biomechanical Phenomena
Biomechanics
Humans
Injuries of the limb. Injuries of the spine
Inversion injury
Male
Medical sciences
Peroneal muscle
Pronation
Radiology
Rotation
Supination
Torque
Traumas. Diseases due to physical agents
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Description
Summary:Abstract This study presents the design of a mechanical jig for evaluating the ankle joint torque on both cadaver and human ankles. Previous study showed that ankle sprain motion was a combination of plantarflexion and inversion. The device allows measurement of ankle supination and pronation torque with one simple axis in a single step motion. More importantly, the ankle orientation allows rotation starting from an anatomical position. Six cadaveric specimens and six human subjects were tested with simulated and voluntary rotation respectively. The presented mechanical jig makes possible the determination of supination torque for studying ankle sprain injury and the estimation of pronation torque for examining peroneal muscle response.
ISSN:1350-4533
1873-4030
DOI:10.1016/j.medengphy.2012.03.004