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Revision Patellofemoral Arthroplasty from an Inlay to Onlay Implant: A Case Report
Katharine D Harper1, Zachary N Bennett2
1Department of Orthopaedic Surgery, Washington DC Veterans Affairs Medical Center, Washington, District of Columbia.
Case:
A 57-year-old man, 5 years status post right patellofemoral arthroplasty (PFA) with a first-generation (1 G) inlay implant, presented with knee pain and decreased function in midflexion. Radiographs demonstrated minimal degenerative changes in the remainder of the knee. Considering this, he was not a candidate for conversion to total knee arthroplasty (TKA) and was converted to an onlay PFA with excellent pain relief, motion, and return to high demand activities.
Conclusion:
Patients with inlay PFA implants who are not candidates for conversion to TKA may benefit from conversion to onlay PFA designs.
