A Rare Case Report With Literature Review of a Symptomatic Medial Discoid Meniscus in a 34-Year-Old Male: Arthroscopic Saucerization and Repair

Medial discoid meniscus is a rare anomaly, with an incidence of 0.12-0.3%, predominantly in men under 18 years of age. This condition is characterized by a disk-shaped meniscus that covers a larger area of the tibial plateau, with increased thickness. It may be asymptomatic, and its diagnosis is based on nuclear magnetic resonance (MRI). Surgical treatment is reserved for symptomatic patients. Saucerization and suturing help preserve stability and as much meniscal tissue as possible; alternatively, a meniscectomy can be performed. The clinical case presented involves a 34-year-old man with chronic pain in the right knee and MRI findings indicating a medial discoid meniscus with a longitudinal and horizontal tear. Arthroscopy confirmed these findings, and saucerization and meniscal suturing were performed. After an uneventful recovery, the patient returned to normal activities in four months. This case shows an uncommon anomaly of the medial meniscus in an adult, characterized by its instability, highlighting the importance of evaluating its bilaterality and the injury pattern presented, allowing us to treat it appropriately.