The purpose of this project is to construct a preventive diagnosis system for hip fracture which is frequently observed among Japanese elderly female. Hip fracture is one of the most important medical problems in Japanese geriatric medicine because it makes a patient difficult to stand and walk. In this study, we evaluated the effects of gait velocity on risk of hip fracture taking into account gait motions of elderly female. Simulation results showed that the risk of trochanteric fracture at pelvis grounding increases with gait velocity while the risk of intracapsular fracture at knee grounding is independent of gait velocity.
