United Orthopedic Corporation

22 When the Onset patellar component is choosed, assemble the Onset Patellar Resection Guide 55 to the Patellar Resection Clamp 47 . Use the stylus on the bottom of onset patellar resection guide to check if the remained patellar thickness exceeds 10 mm. If so, clamp the patella tight and place the saw blade into the slot of the clamp and resect the patella until the showing subchondral bone. Then choose the appropriate size Onset Patellar Drill Guide 56 , and drill three round fixation peg holes with the Onset Patellar Peg Drill 57 . Now the preparation for onset patellar component is completed. Now the Onset Patellar Trial 58 may be positioned. Assessing the contact and stability of the bone/implant couple. A thickness measurement of the implant/bone couple may be performed to assure the original patellar A-P thickness. Trialing is performed in a standard fashion. E. Patellar Preparation E.2. Onset Patellar Component Preparation 56 Onset Patellar Drill Guide C/N varies by size 58 57 Onset Patellar Peg Drill 9404-3201 55 Onset Patellar Resection Guide 9403-5302-RB Patellar Trial, Onset C/N varies by size