Patellofemoral ankylosis: case report and technical note.

INTRODUCTION: It is our understanding that there is no consensual solution for the treatment of post-traumatic patellar ankylosis; therefore, the purpose of this work is to present two cases of patellofemoral retinacular interposition arthroplasty, and its corresponding technical note. CASE 1: Female, 24, patellar ankylosis secondary to supratranscondylar fracture, associated with comminuted diaphyseal tibia fracture. CASE 2: Female, 48, patellar ankylosis secondary to femoral diaphysis and lateral femoral condyle fracture. RESULTS: After going through a patellofemoral retinacular interposition release, both patients were satisfied with the results, presenting with significantly improved knee range of motion. CONCLUSION: Using our surgical technique, we were not able to restore normal function to our patients, but their improvement was certainly impressive relative to their initial clinical situation.