LOWER EXTREMITY PROSTHESIS DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a lower extremity prosthesis device attached to a user who lost the part of the leg below the femur, allowing optimum and smooth walking even if walking speed varies. SOLUTION: In the lower extremity prosthesis device, a guide member 12 is provided vertically within the main body 5 of a crus prosthesis part 2 and a weight 10 can be moved vertically along the guide member 12 by loosening of a screw 13 and be fixed in a certain position by tightening of the screw 13, so that the position of the gravitational center G of the crus prosthesis part 2 is varied to match with walking speed to adjust the speed of swing of the crus prosthesis part 2.