Abstract: A customized surgical cutting guide mounted on a femur for TKR comprises a base having a plurality of cylinders located thereon, a pair of arms branching from a top of the base and each having a column located at a tip thereof, and a convex portion protruding from a bottom of the base and abutting against a corresponding portion of the femur. And wherein each cylinder has a through hole extending therethrough for allowing a kirschner pin to pass through, and wherein each column abuts against a corresponding portion of the femur and has a mounting hole extending therethrough for positioning the arms onto the corresponding positions of the femur, and wherein the arms, the cylinders, and the convex portion are located at the same side of the base.

Abstract: A patient-specific acetabular guide comprises a cup body, a plurality of alignment arms extending from the cup body and engaging periacetabular areas of a pelvis, and a supporting leg protruding from the cup body and abutting against a portion of an acetabular fossa. Each alignment arm has a fixing hole extending inclinedly therethrough to allow a Kirschner pin to pass through and enter the periacetabluar area of the pelvis for positing and orienting the acetabular guide on a predetermined location of an acetabulum.

Abstract: A patient-specific acetabular guide comprises a cup body, a plurality of alignment arms extending from the cup body and engaging periacetabular areas of a pelvis, and a supporting leg protruding from the cup body and abutting against a portion of an acetabular fossa. Each alignment arm has a fixing hole extending inclinedly therethrough to allow a Kirschner pin to pass through and enter the periacetabluar area of the pelvis for positing and orienting the acetabular guide on a predetermined location of an acetabulum.