United Orthopedic Corporation

E. Patellar Preparation E.1. Inset Patellar Component Preparation There are two options for patellar component: Inset and Onset. Evert the patellar and remove excessive osteophytes. With a Caliper 44 , measure and record the thickness of the A-P dimension of the patella. NOTE : In planning the resection thickness, it is recommended to retain a 10 mm minimal thickness of retained patella bone to support the implant structure. The Patellar Sizing Ring 45 is used to determine the desired patellar diameter and positioning. Typically, the Ring is positioned over the highest point of the articulation and the center position is marked with a cautery or ink. 44 Caliper 9401-7012 45 Patellar Sizing Ring 9401-7002 19 2mm