Background
Patellofemoral osteoarthritis (PFOA) is relatively common, affecting 24% females and 11% males over the age of 55 years. Most patients can be treated conservatively. Arthroplasty remains the ultimate procedure for end stage PFOA. Debate continues as to whether total knee replacement (TKR) or patellofemoral replacement (PFR) is better for this group of patients. The aim of this article is to review the current evidence for use of these two procedures in this condition.