PROBLEM TO BE SOLVED: To downsize a lower extremity orthosis and prevent deviation of a leg worn part by reducing upward reaction in a plantar flexion brake of a foot part.SOLUTION: A lower extremity orthosis 1 includes: a leg worn part 10 to be worn on a leg part at a proximal side from an ankle of a wearer a foot worn part 20 to be worn on a foot part at a distal side with respect to the ankle of the wearer and being movable in a three-dimensional direction with respect to the leg worn part 10 C-shaped springs 30 and 31 for connecting the leg worn part 10 and the foot worn part 20 and circular elastic bodies 40 and 41 disposed inside the C-shaped springs 30 and 31.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】下肢装具を小型化するとともに、足部の底屈制動における上向きの反力を低減して脚装着部のずれを防止する。【解決手段】下肢装具1は、装着者の足首から近位側の脚部に装着される脚装着部10と、装着者の足首より遠位側の足部に装着されて脚装着部10に対して三次元方向に移動可能な足装着部20と、脚装着部10及び足装着部20を連結するC形ばね30、31と、C形ばね30、31の内部に配置される円形弾性体40、41と、を具備する。【選択図】図1
