Intermedullary rod apparatus and methods of repairing proximal humerus fractures

A bone stabilizing device comprising:

• a stem member, extending substantially along a first longitudinal axis, for insertion into a bone cavity;
• an extension member, connected to said stem member having a plastic material, extending substantially along a second longitudinal axis;
• a prosthetic head having a mounting surface and a hemispherical shaped surface formed about a centerline;
• and
• means for securing said prosthetic head to said extension member, said means comprising:
• a support member connected to said extension member having a head support surface facing toward said mounting surface of said prosthetic head, said head support surface forming a predetermined angle with said extension member,
• a hole formed in said support member and projecting into said head support surface toward said extension member, and
• a pin connected to said mounting surface of said prosthetic head;
• and
• means for securing a bone to said extension member, said means for securing bone comprising:
• an attachment screw having a threaded portion engaged with said extension member and having a screw head spaced apart from an outer surface of said extension member, wherein a rotation of said threaded attachment screw urges said screw head against the bone and thereby urges the bone against the extension member.

A bone stabilizing device comprising:

• a stem member, extending substantially along a first longitudinal axis, for insertion into a bone cavity, said stem member having a distal end and a proximal end;
• an extension member, extending substantially along a second longitudinal axis, having a distal and a proximal end;
• a spacer bracket having a mounting flange with a hole formed therein and having a support face;
• a threaded extension, formed on one of said proximal end of said stem member and said distal end of said extension member, said threaded extension passing through said hole in said mounting flange and threading into a threaded hole formed in the other of said proximal end of said stem member and said distal end of said extension member, so as to securely mount said mounting flange to said extension member and said stem member;
• a prosthetic head having a substantially planar surface and having a hemispherical shaped surface formed about a centerline extending normal to said planar surface;
• and
• means for securing said prosthetic head to said spacer bracket, said means comprising a tapered hole extending normal into a plane of the support face of said spacer bracket and a tapered pin connected to the planar surface of said prosthetic head.