Correction apparatus of spaces for the knee prosthesis

correcting apparatus of knee prosthesis spaces comprising a gantry (1), and two pairs of skids (21, 22 and 31, 32) parallel and extending on either side of the gantry in a direction perpendicular to the plane of the gantry and which can adjust the spacing of the front and rear parts independently. This device can measure the distance between parts of the resected tibia and the femur in the extended position and to postpone this spacing in flexed position to make resections of the femur in the latter position.