PROBLEM TO BE SOLVED: To provide a joint regulation instrument excellent in durability in a simple structure, which regulates a movable range of a joint.SOLUTION: A joint regulation instrument connecting a first bone part of a wearer with a second bone part to regulate a movable range of the joint comprises: a first component mounted on a body part in the side of the first bone part； a second component mounted on a body part in the side of the second bone part； and a joint mechanism supporting the first component and the second component so that the first component and the second component can respectively oscillate in an oscillation range regulated in advance in a movable direction of the joint. The joint mechanism includes an elastic mechanism exhibiting elastic forces against oscillation when the first component and the second component respectively start to oscillate beyond the oscillation range.SELECTED DRAWING: Figure 11【課題】単純な構造で耐久性の高い、関節の可動範囲を規制する関節規制器具を提供する。【解決手段】装着者の第１の骨部と第２の骨部とを接続する関節の可動する範囲を規制する関節規制器具は、第１の骨部の側の身体部位に装着される第１部材と、第２の骨部の側の身体部位に装着される第２部材と、第１部材と第２部材とが互いに関節の可動方向に沿って予め規制された揺動範囲で揺動可能なように、第１部材と第２部材とを支持する関節機構とを備え、関節機構は、第１部材と第２部材とが互いに揺動範囲を超えて揺動しようとする場合に、揺動に抗する弾性力を発揮する弾性機構を有する。【選択図】図１１
