Arthroscopic treatment of symptomatic discoid lateral meniscus in a 26-month-old girl

Discoid lateral meniscus is a well-documented pathology, but symptomatic discoid lateral meniscus in a very young child and arthroscopic management are extremely rarely reported. We report a case of symptomatic discoid lateral meniscus in a 26-month-old girl who showed limping and extension loss after a minor trauma. Physical examination revealed clicking and 10° terminal extension loss, which was suggestive of the torn discoid meniscus. Magnetic resonance imaging showed discoid lateral meniscus with intrameniscal tear. Treatment consisted of arthroscopic one-piece excision technique with conventional arthroscopic instrument and a No. 11 blade. A good subjective and objective functional outcome has been obtained after 35 months of follow-up evaluation.