Ahmed Ali Raheel, McKay Scott
Baylor College of Medicine, Houston, TX 77030, USA.
Department of Pediatric Orthopaedics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA.
Case Rep Orthop. 2014;2014:285675. doi: 10.1155/2014/285675. Epub 2014 Dec 8.
Background. A discoid meniscus is a thickened variant of the normal C-shaped meniscus prone to injury. Discoid medial meniscal tears have rarely been reported within families and may suggest familial or developmental origins. Methods. We report the cases of two Caucasian brothers with symptomatic discoid medial meniscus tears. A literature review was conducted addressing discoid medial meniscus and cases of familial meniscus tears. Case Presentation. Physically active brothers presented with progressively worsening knee pain. MRI revealed medial meniscus tears in both brothers. The family history of medial meniscus tears in their mother and the discoid medial meniscus injuries found on arthroscopy suggested evidence for familial discoid medial meniscus tears. Conclusions. Discoid medial meniscus tears within a family have not been previously reported. Two cases of families with discoid lateral meniscus tears have been reported. Discoid medial meniscus is rare relative to the discoid lateral meniscus and predisposes children to symptomatic tears.
背景。盘状半月板是正常C形半月板的一种增厚变体，易于受伤。盘状内侧半月板撕裂在家族中鲜有报道，可能提示其具有家族性或发育性起源。方法。我们报告了两名患有症状性盘状内侧半月板撕裂的白种人兄弟的病例。针对盘状内侧半月板和家族性半月板撕裂病例进行了文献综述。病例介绍。身体活跃的兄弟俩出现膝关节疼痛逐渐加重。磁共振成像（MRI）显示兄弟俩均有内侧半月板撕裂。他们母亲有内侧半月板撕裂的家族史，且关节镜检查发现盘状内侧半月板损伤，提示存在家族性盘状内侧半月板撕裂的证据。结论。此前尚未报道过家族性盘状内侧半月板撕裂病例。已有两例家族性盘状外侧半月板撕裂的病例报道。相对于盘状外侧半月板，盘状内侧半月板较为罕见，且易使儿童出现症状性撕裂。
