ARTIFICIAL JOINT STEM, ARTIFICIAL JOINT STEM COMPONENT, AND ARTIFICIAL JOINT STEM MANUFACTURING METHOD

摘要

Provided is an artificial joint stem which can reduce manufacturing labor, can increase strength through avoiding stress concentration, and has a high degree of freedom of shape; also provided are an artificial joint stem component and an artificial joint stem manufacturing method. A stem (4) is provided with a stem main unit (6) and a porous unit (7) which has a porous body (21) and is connected to the stem main unit (6). The stem main unit (6) has an insertion part (11) for insertion into the medullary cavity (102b) of the femur (102). The porous unit (7) is a cylindrical single part formed by lamination of a metal powder having bioaffinity and is arranged so as to surround the proximal part of the insertion unit (11).