Abstract
For the old people over their ages of 65 years old, the frequency of injuries from fall accidents is very high enough that one of every 3 persons experiences some injuries resulting from a fall accident every year, and the number of old people dying or suffering from the fall injuries is gradually increased. This study aimed to investigate an fall's influence on the human body's injury from the impact aspect by realizing a 3D musculoskeletal motion dynamic model. In the falling simulations, the maximum contact force was primarily calculated when the hip was collided with the ground (1.90 times of subject's weight). And the maximum contact force was secondarily calculated (0.57 times of subject's weight) when the wrist was touched onto the ground. While the experiment targeting real human bodies showed similar pattern of findings to those of simulation results, although the former showed somewhat higher values (2.21 times of the subject's weight at the hip, and 0.63 times of the subject's weight at the wrist). It is considered the 3D musculoskeletal dynamic simulation model will be utilized as a useful tool to acquire basic information on the falling-injury researches according to human body's various changes and environmental changes in future.
