Discoid Lateral Meniscus : Report of Four Cases With Arthroscopic Treatment And Review of The Literature

Discoid lateral meniscus is a relatively uncommon anomaly. We present four cases of discoid lateral meniscus, 3 females and 1 male presenting in the age group of 9 to 30 years. 3 out of 4 patients had symptoms and clinical examination suggestive of lateral meniscus pathology. X-rays and Magnetic resonance imaging were obtained for affected knees in which discoid lateral meniscus with tear was found in one case. Furthermore, on arthroscopy, all 3 patients having clinical findings suggestive of lateral meniscus injury showed incomplete discoid lateral meniscus with tear, treated by doing partial meniscectomy. In 1 case discoid lateral menisus was discovered on arthroscopy, for medial meniscus tear, and was left as such.