Patent ID: 8915919

Claim:
A bone rifling system (BRS) for use in placing an endoprosthesis, including an orthopedic undercut reamer comprising; a guide tube having a proximal and distal end, a cutter bar having at least one cutter extending from a portion of said cutter bar, said cutter bar positioned within said guide tube between the proximal and distal ends of said guide tube and displaceable to extend said at least one cutter from an outer surface of said guide tube; an engager adapted to control the displacement of said cutter bar and engage the cutter with an internal surface of a bone; a cap adapted to close the proximal end of the guide tube; and at least one semi-cylinder positioned within said guide tube and adapted to displace said cutter bar, wherein said engager further includes at least one engagement rod extending from said engager through said cap; and the at least one semi-cylinder displaces the cutter bar in response to movement of said engagement rods.