Patellofemoral Replacement Polymer Stress During Daily Activities: A Finite Element Study

Isolated, symptomatic patellofemoral arthritis, although uncommon, has been reported to affect 8% of women and 2% of men over the age of fifty-five years1. Both conservative and surgical nonarthroplasty interventions have been advocated; however, reports on such interventions have suggested limited success2. Patellofemoral joint replacement designs as an alternative solution are beginning to reemerge largely through an appreciation of design requirements and the importance of component placement, which have been major factors in earlier clinical disappointments3-6.