Abstract
A fracture of fifth metatarsal bone caused by playing soccer has been widely reported. However, the fracture mechanism of metatarsal bone has not been sufficiently clarified yet. The purpose of this study is to investigate influences of moves in playing soccer on the fifth metatarsal bone behavior by using motion capture and foot pressure measurement system. The experimental results showed that foot pressure under the fifth metatarsus bone of the pivot foot in a cross step motion and a cross kicking motion were heigher than that in inside step motion. Foot width got narrowed in the cross step moiton and kicking motion at proximal end fifth metatarsus bone. On the other hand, foot width got widend at the distal end. It is expected that identification of the mechanical behaviors in cross step motion and the kicking motion on to the bone stress distribution provides useful information to clarify the metatarsal bone fracture mechanism.
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