Patent ID: 7955336

Claim:
A cutting instrument for preparing an osteochondral plug for implantation within a bone defect site, the cutting instrument comprising: a dual function cutting block having a bore sized to receive an osteochondral plug, wherein the cutting block is configured to first function to hold the osteochondral plug within the bore to allow for length sizing, and wherein the cutting block is further configured to function secondly to hold the osteochondral plug within the bore to allow for cross-sectional sizing of the osteochondral plug; a base holder configured for selectively engaging the cutting block in one of a first orientation and a second orientation to facilitate the functions of the cutting block; and a trimming mechanism for cutting the osteochondral plug to fit within a bone defect site, said trimming mechanism comprising a cutting assembly having a plurality of substantially flat blades each having a planar leading edge, said trimming mechanism attached to the base holder and aligned with the bore of the cutting block when the cutting block is positioned in the second orientation so when actuated, the trimming mechanism cuts the osteochondral plug positioned within the bore of the cutting block; wherein when the cutting block is positioned in the first orientation, the cutting block is disposed horizontally relative to the base holder and when the cutting block is positioned in the second orientation, the cutting block is disposed vertically relative to the base holder.