The Congenital Discoid Meniscus

1 . A personal series of twenty-nine discoid menisci is reviewed. 2. Three anatomical types are recognised and described. 3. The characteristic lesions incurred by each type is recorded. 4. The anatomical and pathological features of the specimens are compared with those of cases previously recorded. 5. A discoid medial meniscus is described, and compared with the only other specimen known to be recorded in the literature.