Bilateral discoid medial menisci with extensive intrasubstance cleavage tears: MRI and arthroscopic correlation.

Although rare, the discoid meniscus can become problematic in active individuals. The arthroscopist is then presented with a challenging treatment problem. Through the current techniques of arthroscopy and MRI, the diagnostic and treatment difficulties are lessened; however, our understanding of the discoid meniscus is incomplete. Currently, the need exists for correlation between arthroscopy and MRI. We present a case of bilateral complete discoid medial menisci with symptomatic extensive intrasubstance horizontal cleavage tears. Both arthroscopy and MRI views of the lesions, pre- and postoperative, are presented. A review and discussion of the literature is included.