Fountain morphology of an osteochondral defect in a paediatric patient: A case report

Introduction: This case report describes a 13-year-old male patient, with unusual magnetic resonance imaging findings of subchondral cysts associated with an osteochondral defect of the right knee. Case Report: The patient presented with a six-week history of right knee pain, swelling and locking. Clinical examination revealed a loose body in the suprapatellar pouch, a small effusion, and a fixed flexion deformity. Imaging features revealed an unusual fountain-like morphology of the subchondral cysts, deep to the defect. The patient underwent surgical repair. Conclusion: This radiographical finding may suggest an interplay between biomechanical stress and subchondral bone remodeling, warranting further investigation into the pathogenesis of such morphology.