The invention relates to the field of bone joint reduction, particularly discloses an orthosis for bone joint reduction and fixation, and solves the problems that an existing bone joint fixation orthosis, particularly a
knee joint fixation orthosis, is single in function and is not beneficial to joint
rehabilitation and later
exercise recovery of a patient. The device comprises a base, a limiting box, an opening, a sliding frame, a clamping base, a fixing clamping plate, an adjusting
assembly, a rotating shaft, an upper protection plate, a side plate, a sliding frame, a pressing base, a first rotating plate, a sliding base, a
cam and a driving
assembly, the outer side of the limiting box is slidably connected with a
pulley, and a linkage
assembly is arranged in the limiting box and used for driving the
pulley to slide on the outer side of the limiting box. According to the device, the
knee joint of a patient can be stably limited, fixed and corrected, the legs of the patient cannot be tightly clamped,
blood circulation of the legs of the patient is facilitated, meanwhile, auxiliary pressing
massage can be further carried out, muscles of the patient can be stimulated to keep
vitality, and the follow-up
rehabilitation exercise period is shortened.