Date of Award


Degree Type


Degree Name

Master of Science (MS)


Medical Engineering

First Advisor

Dr. Keith Kenter

Second Advisor

Dr. Peter Gustafson

Third Advisor

Dr. Steven Butt


Patella resection, as a routine component of TKA, can be both difficult to plan and difficult to execute. The primary purpose of this study was to evaluate the repeatability of three unique patellar resection techniques used in total knee arthroplasty. The secondary purpose of this study was to establish whether different surgical techniques were able to reproduce preoperative plans made by each surgeon. We used radiographic measurements to evaluate patellar thickness and patellar cut angle preoperatively and postoperatively. Three techniques (45 cases in total) were evaluated, revealing qualitative differences between surgical techniques and significant quantitative differences between average patellar thickness and tilt values. No one technique was found to accurately execute the preoperative plans, and all resections were completed at a more conservative thickness than was pre-planned by the surgeons. Our results reflect conclusions in the literature, finding no significance in the ability to pre-plan patellar resections.