Komatsu Nami, Yamamoto Keitaro, Chosa Etsuo
Department of Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.
Knee. 2008 Aug;15(4):330-2. doi: 10.1016/j.knee.2008.03.003. Epub 2008 Apr 28.
Reports of congenital abnormalities of the lateral meniscus include discoid meniscus, accessory meniscus, double-layered meniscus and ring-shaped meniscus. We present a rare case of an unusual abnormality of the bilateral lateral meniscus, which was completely separated and duplicated at the midportion, although different from an accessory meniscus, with an anomaly of the anterior horn of the medial meniscus as well as a double-layered medial meniscus. This type of abnormality of the lateral meniscus and double-layered medial meniscus has not previously been described in the literature. We have designated the abnormality of the bilateral lateral meniscus a separated meniscus.
外侧半月板先天性异常的报告包括盘状半月板、副半月板、双层半月板和环形半月板。我们报告一例罕见的双侧外侧半月板异常病例，其在中部完全分离并重复，虽然不同于副半月板，但同时合并内侧半月板前角异常以及内侧半月板双层。这种外侧半月板和内侧半月板双层的异常类型此前在文献中尚未有描述。我们将双侧外侧半月板的这种异常命名为分离半月板。
