Prosthesis having a metaphyseal element

A prosthesis comprising:

• a stem;
• a metaphyseal element attached at a proximal end of the stem, the metaphyseal element including a first diverging wall element including a substantially flat outer face, the metaphyseal element further comprising a second diverging wall element including a substantially flat outer face;
• a medial aspect aperture defining in part a medial aspect of the metaphyseal element;
• a lateral aspect aperture defining in part a lateral aspect of the metaphyseal element;
• a joint base member attached at a proximal end of the metaphyseal element;
• a bone graft pocket formed in the metaphyseal element along a substantially medial-lateral plane, the bone graft pocket formed proximal to the stem, distal to the joint base member, the bone graft pocket defined between the first diverging wall element, the second diverging wall element, the medial aspect aperture and the lateral aspect aperture;
• and
• a joint element attachable to the joint base member.

A prosthesis adapted to permit introduction of bone graft material into and protrusion of bone graft material from a metaphyseal element of the prosthesis, the prosthesis comprising:

• a stem;
• a metaphyseal element attached at a proximal end of the stem, the metaphyseal element further comprising a first wall element, the first wall element including a substantially flat outer face, the metaphyseal element further comprising a second wall element, the second wall element including a substantially flat outer face, the first wall element diverging from the second wall element as the first wall element and the second wall element extend proximally from the stem;
• a medial aspect aperture defining in part a medial aspect of the metaphyseal element;
• a lateral aspect aperture defining in part a lateral aspect of the metaphyseal element;
• a joint base member attached at a proximal end of the metaphyseal element;
• a bone graft pocket formed in the metaphyseal element along a substantially medial-lateral plane, the bone graft pocket formed proximal to the stem, distal to the joint base member, the bone graft pocket being further defined by the first wall element, the second wall element, the medial aspect aperture and the lateral aspect aperture;
• a first osteotome slot formed in the joint base member proximate to and substantially parallel to the outer face of the first wall element;
• a second osteotome slot formed in the joint base member proximate to and substantially parallel to the outer face of the second wall element;
• and
• a joint element attachable to the joint base member.