Patent ID: 8439921

Claim:
An apparatus for preparing and reconstructing the human acetabulum, femoral head, or both, using tissue engineered osteochondral constructs and/or an osteochondral allograft transplant, said apparatus comprising: a base for placement of said apparatus on a generally flat surface; a support disposed generally vertically from said base; an arm attached to or integral with said support; a motorized reamer secured on said arm and having a vertically disposed drive shaft; a cutting tool mounted on said drive shaft, wherein said cutting tool is a cup-shaped reverse hemisphere reamer having cutting elements disposed on its inner surface for removing excess bone and sculpting the acetabular allograft or osteochondral construct to the precise size and thickness needed for the procedure; a stabilization platform disposed immediately under said cutting tool for placement of an allograft or osteochondral construct; and workpiece holding apparatus for securing the allograft or osetochondral construct in position on said platform; said workpiece holding apparatus including a plurality of horizontally oriented stabilization rods disposed around said stabilization platform for holding a femoral head at its peripheral surface during a head reaming process, such that the entire surface of an acetabular graft or femoral head can be prepared.