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Background: Several different etiologies cause knee pain in the pediatric and adolescent population, including anterior knee/patellofemoral pain, patellar instability, anterior cruciate ligament (ACL) tears, meniscal tears, osteochondritis dissecans (OCD) lesions, and discoid meniscus. The purpose of the current study was to determine the relative morbidity of different causes of knee pain in children and adolescents using the International Knee Documentation Committee (IKDC) score.

Methods: We performed a retrospective review of prospectively collected data of a cohort of pediatric and adolescent patients with knee pain who presented to a single surgeon. Each patient completed an IKDC questionnaire at the time of diagnosis and patients were grouped by diagnosis for analysis. Statistical analysis was performed to compare the IKDC scores of the 7 diagnostic groups, and a P-value< 0.05 was considered …