Abstract: Provide is a health appliance and a method using the same which achieve active and appropriate assistance of bending of a knee joint. The health appliance, which allows a user lying or seated to move their knee joint while supporting the knee joint, includes a support 1 which is a triangular prism having one side surfaces as a bottom surface 11, and an aid 2 mounted on the leg below the knee and can be pulled by the user. The support 1 has a width W at which one knee is supported, and has a cross section forming a triangle with a base corresponding to one side surface 11 and an acute diagonal angle ?1. When sandwiched under the user's knee, the base angle ?2 adjacent to the toe is larger than the diagonal angle ?1 and smaller than the base angle ?3 adjacent to the thigh.

Abstract: Provide is a health appliance and a method using the same which achieve active and appropriate assistance of bending of a knee joint. The health appliance, which allows a user lying or seated to move their knee joint while supporting the knee joint, includes a support 1 which is a triangular prism having one side surfaces as a bottom surface 11, and an aid 2 mounted on the leg below the knee and can be pulled by the user. The support 1 has a width W at which one knee is supported, and has a cross section forming a triangle with a base corresponding to one side surface 11 and an acute diagonal angle ?1. When sandwiched under the user's knee, the base angle ?2 adjacent to the toe is larger than the diagonal angle ?1 and smaller than the base angle ?3 adjacent to the thigh.

Abstract: A surgical instrument including a pre-cut trial mounted on a pre-cut line which is cut shallower than a genuine-cut line. The pre-cut trial is modeled after the genuine implant which is mounted on resected surfaces formed by performing genuine-cutting and comprised of an end resected surface, posterior and anterior resected surfaces, and posterior and anterior chamfer-resected surfaces on the distal end of a femur, and the pre-cut trial is mounted on the pre-cut line, thus observing the extended and flexed positions of the femur and the state of flexion thereof so as to make judgment if the genuine implant is appropriate.

Abstract: A bone resection jig that can make ligament tension equal at extension and flexion positions without any actual measurements when resecting femur and tibia during artificial knee joint replacement surgery.

Abstract: A surgical instrument including a pre-cut trial mounted on a pre-cut line which is cut shallower than a genuine-cut line. The pre-cut trial is modeled after the genuine implant which is mounted on resected surfaces formed by performing genuine-cutting and comprised of an end resected surface, posterior and anterior resected surfaces, and posterior and anterior chamfer-resected surfaces on the distal end of a femur, and the pre-cut trial is mounted on the pre-cut line, thus observing the extended and flexed positions of the femur and the state of flexion thereof so as to make judgment if the genuine implant is appropriate.

Abstract: A bone resection jig that can make ligament tension equal at extension and flexion positions without any actual measurements when resecting femur and tibia during artificial knee joint replacement surgery.