Artificial humerus head

An artificial humerus head comprising an elongated unitary member having a pin at one end thereof for insertion into the shaft of a humerus, a substantially spherical head at the other end thereof, and a shaft between said pin and head adapted to act as a continuation of the humerus when said pin is inserted into the shaft of the humerus, said spherical head having an elongated groove formed in its exterior surface for longitudinally receiving the long biceps tendon, said groove extending generally in the direction of elongation of said member between spaced points on the outer periphery of said head and being oriented at a slight angle to the longitudinal axis of said elongated member, and a cover member covering said groove and cooperating with said groove to form an open-ended, enclosed channel for the long biceps tendon extending through said head generally in the direction of elongation of said member.