Bone prosthesis fixation device and methods of using same

A prosthetic device implantable into skeletal bone, the device comprising:

• (a) a main body defining an internal passageway and being implantable into skeletal bone, and having a plurality of openings extending between the internal passageway and the exterior of the main body, each opening being threaded;
• (b) a plurality of screws, each screw being threadably mounted in a respective opening, being adapted to cut into bone and including a gear at an end thereof;
• (c) an actuating rod, rotatably mounted in the body;
• and
• (d) drive gears mounted on the actuating rod and meshing with respective gears on the screws, whereby rotation of the actuating rod rotates the screws.

A prosthetic device implantable into skeletal bone, the device comprising:

• (a) a main body implantable into skeletal bone, and having a straight axis, an internal passageway around the axis, a plurality of openings extending between the internal passageway and the exterior of the main body, a head offset from the axis of the main body and a top surface offset from the head and generally perpendicular to the axis of the main body onto which top surface the internal passageway opens;
• (b) a plurality of pins provided within the internal passageway and displaceable between a retracted position within the internal passageway and an extended position extending out through the openings and penetrating bone;
• (c) drive means for displacing the pins between the retracted and extended positions;
• and
• (d) means, extending from the drive means to a position adjacent the top surface, for actuation of the drive means.