Monllau J C, León A, Cugat R, Ballester J
Department of Orthopaedic Surgery, Hospital del Mar, Universidad Autónoma de Barcelona, Spain.
Arthroscopy. 1998 Jul-Aug;14(5):502-4. doi: 10.1016/s0749-8063(98)70079-9.
The existence of abnormal-shaped menisci has been long recognized. The presence of discoid menisci in the human knee is considered to be a congenital malformation with a very low rate of incidence except in Asian populations. Since the publication of Watanabe's Atlas, three types of lateral meniscal abnormalities are generally accepted: the complete and incomplete discoid, as well as the Wrisberg-ligament type meniscus. The present case is the second description of a ring-shaped meniscus on the lateral side of the knee and we propose that this variant be included as a fourth variant in a future classification.
异形半月板的存在早已为人所知。人类膝关节盘状半月板的存在被认为是一种先天性畸形，除亚洲人群外发病率极低。自渡边图谱出版以来，外侧半月板异常通常分为三种类型：完全和不完全盘状半月板，以及Wrisberg韧带型半月板。本病例是关于膝关节外侧环形半月板的第二篇报道，我们建议在未来的分类中将这种变异作为第四种变异类型纳入其中。
