PATELLA CLAMP APPARATUS

摘要

A patella clamp apparatus (10) includes a scissor-like instrument frame (25) having a pair of handles (12, 13) at one end portion. A patella holder (34) and drill collet have gripping surfaces (24, 35) for holding a patient's patella therebetween during preparation for implantation of a prosthesis. The collet (36) has arcuate slots (23) for accepting the vertical ridge of the patella. A reamer or cutting instrument (60) cuts a circular recess into the posterior face of the patella. The collet (36) is supported by the frame. The collet (36) accepts a depth stop (42) for referencing the posterior aspect of the patella. The collet (36) provides a bore that supports a reamer or drill (60) for forming the circular recess in the patella posterior surface.