The present invention relates to a joint brace that includes a support structure and a flexible attachment structure. The support structure includes a first plate, a second plate, and a pivoting device. The pivoting device is configured to pivot the first plate and the second plate such that the first plate and the second plate can pivot relative to each other under the stressed state of the support structure. The pivoting device includes a resilient device configured to cause the first and second plates to return to their original position by the elastic force provided by the support structure when the support structure is from the stressed state to the released state. The attachment structure is configured to releasably attach the joint brace to the joint of the limb.本創作關於一種關節護具，其包括支撐結構及具有可撓性的附接結構。支撐結構包括第一板、第二板及樞接裝置。樞接裝置配置來樞接第一板及第二板，使得在支撐結構的受力狀態下，第一板及第二板可相互樞轉。樞接裝置包括彈力裝置，其配置來在支撐結構從受力狀態到釋放狀態時，使得第一板及第二板可藉由其所提供的彈力回復原始位置。附接結構配置來使關節護具可拆地附接到肢幹的關節上。
