An AFO includes a cuff, a foot plate, a strut, a joint unit and a stopping member. The cuff is securable to a calf of a patient. The foot plate is for supporting a foot. The strut is connected to the cuff. The joint unit is connected to the foot plate and the strut, and the joint unit includes an upper joint and a lower joint. The upper joint has a first end connected to the strut, and a second end. The lower joint has a third end connected to the foot plate, and a fourth end connected to the second end in a rotatable manner such that the lower joint is rotatable back and forth with respect to the upper joint. The stopping member is mounted on the joint unit for providing a stop limiting a movement range of the lower joint with respect to the upper joint.本發明係關於一種足踝輔具,包括一腿套、一足底板、一支撐板、一關節單元以及一制動元件。腿套可固定於病患之小腿。足底板用以支撐病患之足部。支撐板連接至腿套。關節單元連接至足底板與支撐板,且關節單元包括一上關節與一下關節。上關節具有一連接至支撐板之第一端,以及一第二端。下關節具有一第三端連接至足底板,以及一第四端以可活動方式連接至上關節之第二端,藉此下關節可相對於上關節往前後轉動。制動元件設置於上關節上且經配置用以提供制動,以限制下關節相對於上關節的活動範圍。1‧‧‧足踝輔具10‧‧‧腿套20‧‧‧足底板22‧‧‧足底部24‧‧‧足根部30‧‧‧支撐板32‧‧‧背板34‧‧‧固定元件40‧‧‧關節單元42‧‧‧上關節42X‧‧‧固定元件42K‧‧‧第一節臂44‧‧‧下關節441‧‧‧第一抵接面442‧‧‧第二抵接面44K‧‧‧第二節臂46‧‧‧鉸鏈50‧‧‧制動元件52‧‧‧第一制動件54‧‧‧第二制動件
