ABSTRACT
Patellofemoral arthroplasty is an effective treatment for isolated patellofemoral
arthritis. Midterm results reveal a success rate of approximately 80% to 90% with
modern designs. The reported failure mechanisms associated with patellofemoral arthroplasty
include progressive tibiofemoral arthritis, patellar pain, catching or subluxation
caused by soft-tissue imbalance, component malposition, and problematic designs. We
present a previously unreported new complication of patellar button dissociation in
a mobile-bearing LCS Patellofemoral Joint Replacement Prosthesis.
