Patent ID: 8747410

Claim:
A surgical instrument for use in resection of a patella, the instrument comprising: first and second instrument bodies pivotally connected to one another at a junction between a handle and a clamp arm of each of said first and second instrument bodies, wherein said clamp arm of one of said first and second instrument bodies comprises a cut guide defining a cut guide surface; and an integral depth adjustment assembly disposed completely on a first side of said cut guide, the integral depth adjustment assembly comprising: a stylus slidably coupled to an adjustment body, said stylus having a bone contacting surface movable between a plurality of discrete stylus positions, each of said plurality of discrete stylus positions defining a predefined stylus distance between said cut guide surface and said bone contacting surface; the adjustment body comprising a scalloped region having a plurality of troughs defining said plurality of discrete stylus positions; a knob coupled to and configured to move said stylus between said plurality of discrete stylus positions by successively engaging each of said plurality of troughs of said scalloped region; and a biasing element biasing said knob into engagement with one of said plurality of troughs when said biasing element is acted upon only by forces within said depth adjustment assembly, wherein said knob includes indexing marks indicative of said plurality of predefined stylus distances.