PROBLEM TO BE SOLVED: To provide a knee orthosis which has high rigidity as a whole and yet can be adjusted to fit the width of the knee joint.SOLUTION: The knee orthosis comprises: a thigh part attachment member to be attached to the thigh part a lower leg attachment member to be attached to the lower leg and a pair of movable members for joining the thigh part attachment member and the lower leg attachment member inside and outside the knee. The movable members are each adjusted by a width adjuster in the width direction of the knee.COPYRIGHT: (C)2012,JPO&INPIT【課題】全体としての剛性が高いものでありながら、膝関節の幅に適合できる調節が可能な膝装具を提供すること。【解決手段】大腿部に装着する大腿部取り付け部材と、下腿部に装着する下腿取り付け部材と、前記大腿部取り付け部材と下腿取り付け部材とを、膝の内側と外側とで連結する一対の可動部材とから成る膝装具。前記可動部材が、夫々幅調節機によって膝の幅方向に移動調節される。【選択図】図1