Instrumentation for the preparation and transplantation of osteochondral allografts

A set of medical instruments for forming a transplantable osteochondral allograft, the set of instruments comprising:

• a first tubular crown saw having a proximal end and an open distal end;
• a clamp assembly, the clamp assembly including a base and a vertically extending clamp adapted to receive and constrain bone tissue, the clamp assembly movably coupled relative to the first tubular crown saw to align the first tubular crown saw with constrained bone tissue, the first tubular crown saw movable with respect to the vertically extending clamp;
• a guide plate including a plate base, a first guide cylinder extending from the plate base with a first bore disposed therethrough, and a second guide cylinder insertable into the first guide cylinder wherein the first and second guide cylinders are concentric, the second guide cylinder with a second bore disposed therethrough;
• a second tubular crown saw having a proximal end and an open distal end, wherein the first bore receives the first tubular crown saw and the second bore receives the second tubular crown saw;
• a sleeve including a tubular sleeve body and a base plate having a guide aperture disposed therein, the tubular sleeve body having an inner diameter corresponding to an inner diameter of the second crown saw;
• and
• a guide pin adapted to be received in the guide aperture.