Non-pigmented villonodular synovitis of knee joint in a 11-year-old boy on long term steroids: a case report

<p>Pigmented villonodular synovitis (PVNS) is a rare condition, commonly affecting the knee joint and hip joint. It seldomly seen in pediatric age group. Aetiology unknown. Magnetic resonance imaging (MRI) modality of choice. Managed by surgical resection synovium performed with an open, arthroscopic or combined approach. Post-operative adjuvant external beam radiotherapy have reduced recurrence rate. In this case report we are going to present eleven-year-old boy on long term steroid intake, who presented history pain swelling right restriction range movements. MRI suggested extensive Diagnostic arthroscopy showed suprapatellar pouch, medial gutter, lateral intercruciate space, posterior-medial posterior-lateral compartments villi had atypical yellow fatty appearance. Extensive synovectomy was done histopathology chronic synovitis. Post-operatively movements improved. Arthroscopic most effective line management for synovitis.</p>