BONE RESECTION JIG USED IN SURGICAL OPERATION TO REPLACE ARTIFICIAL KNEE JOINT

摘要

Provided is a bone resection jig that can make ligament tension equal at extending and bending positions without any actual measurements when the femur and the tibia are resected during a surgical operation to replace an artificial knee joint. The bone resection jig which is used in a surgical operation to replace an artificial knee joint comprises a spacer block (1), a reference pin guide (2), and an aiming part (12). The spacer block (1) comprises: a hollow box (7) that includes a vertical hole (7a) at the other end of a grip (6); and a reference spacer (8) that extends from the hollow box (7) and is inserted into a resection region between the femur and the tibia. The reference pin guide (2) comprises a guide hole (9) for guiding a reference pin (3). In the bending position when the knee bends, the reference pin (3) is inserted into the vertical hole (7a) and extends on the reference spacer (8) to the other end side to make contact with a resection surface (FH) of the distal end part of the femur, and the reference pin (3) is implanted in the resection surface (FH) of the distal end part of the femur from the front side. The aiming part (12) comprises an index part (14). After the spacer block (1) is removed from between the femur and the tibia with the reference pin (3) remaining, the index part (14) is inserted into a guide hole (13) of the reference pin (3) with the guide hole (13) guiding the index part (14), and the index part (14) comes into contact with the resection surface (FH) at the distal end of the end part of the femur so as to indicate a resection surface (FR) of the rear part at the distal end of the femur.