Abstract
The authors have developed an assistive device that allows patients with hemiplegia to train natural walk in early after injury. In this study, we develop a lower limb orthosis with a joint that can dorsiflex the MP joint without elasticity by dividing the sole into three layers and making a cut in the middle layer. In this paper, we compared normal walk and walking with a short leg brace that had two types of plantar parts with joints on the sole and a flat type. We first measured the time taken to walk 5 meters, and then measured the range of movement of the sole pressure center. As a result, it was found that the lower limb orthosis with joints in the sole can walk faster than the flat type lower limb orthosis, and that the center of foot pressure can be moved naturally. In addition, it was clarified that the joint position provided on the sole of the foot matches the human MP joint to produce efficient walking.
