Metal jacket for a cementless artificial joint stem and artificial joint having the metal jacket

摘要

A metal jacket (10) for a cementless artificial joint stem (21) encloses at least a part of the cementless artificial joint stem (21). The stem 21, when inside the jacket 10, is insertable longitudinally into an opening formed in a bone canal of a human body. The exterior of jacket (10) has a surface-roughened metal layer or metal wires (12) is/are formed so that the bone can interlock with the metal jacket (12) as the bone grows. <IMAGE>