[Bucket-handle tear of a discoid lateral meniscus in a 6-year-old girl].

A six-year-old girl was examined upon development of pain, swelling, and locking in her right knee after a considerable period of discomfort and popping sensation. She had no history of trauma. Magnetic resonance imaging showed a discoid lateral meniscus, filling the entire lateral plateau and exhibiting signs of degeneration. On arthroscopic examination, a bucket-handle tear of the discoid lateral meniscus was noted and the patient was treated with arthroscopic subtotal meniscectomy. During the first month of follow-up, the patient had a full range of motion and normal gait. At three years, she maintained full range of motion without pain, locking, or popping. Due to the likelihood of joint degeneration, long-term follow-up was recommended.