A mechanical supination sprain simulator for studying ankle supination sprain kinematics.
This study presents a free-fall mechanical supination sprain simulator for evaluating the ankle joint kinematics during a simulated ankle supination sprain injury. The device allows the foot to be in an anatomical position before the sudden motion, and also allows different degrees of supination, or a combination of inversion and plantarflexion. Five subjects performed simulated supination sprain trials in five different supination angles. Ankle motion was captured by a motion analysis system, and the ankle kinematics were reported in plantarflexion/dorsiflexion, inversion/eversion and internal/external rotation planes. Results showed that all sprain motions were not pure single-plane motions but were accompanied by motion in other two planes, therefore, different degrees of supination were achieved. The presented sprain simulator allows a more comprehensive study of the kinematics of ankle sprain when compared with some previous laboratory research designs.
Chan
Yue-Yan
YY
Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong. yychan@ort.cuhk.edu.hk
Fong
Daniel Tik-Pui
DT
Yung
Patrick Shu-Hang
PS
Fung
Kwai-Yau
KY
Chan
Kai-Ming
KM
D000843:Ankle Joint / Q000502:physiology*; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D006801:Humans; D013180:Sprains and Strains / Q000473:pathology*; D013484:Supination / Q000502:physiology*