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Patellofemoral ankylosis: case report and technical note
Márcio Balbinotti Ferrari1, Marcelo Kemel Zago1, Jacqueline Vieira de Castro1
1Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350 - Santa Cecília, Porto Alegre, Rio Grande do Sul, 90035-903, Brazil.
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.

