Shimozaki Kengo, Nakase Junsuke, Ohashi Yoshinori, Numata Hitoaki, Oshima Takeshi, Takata Yasushi, Tsuchiya Hiroyuki
Department of Orthopaedic Surgery, Kanazawa University, 13-1 Takara-Machi, Kanazawa-Shi, Ishikawa-Ken 920-8641, Japan.
J Orthop Case Rep. 2016 Sep-Oct;6(4):9-12. doi: 10.13107/jocr.2250-0685.546.
Discoid meniscus is a well-documented knee pathology, and there are many cases of medial or lateral discoid meniscus reported in the literature. However, ipsilateral concurrent medial and lateral discoid meniscus is very rare, and only a few cases have been reported. Herein, we report a case of concurrent medial and lateral discoid meniscus.
A 27-year-old Japanese man complained of pain on medial joint space in his right knee that was diagnosed as a complete medial and lateral discoid meniscus. In magnetic resonance imaging, although the lateral discoid meniscus had no tear, the medial discoid meniscus had a horizontal tear. Arthroscopic examination of his right knee similarly revealed that the medial discoid meniscus had a horizontal tear. In addition, the discoid medial meniscus also had an anomalous insertion to the anterior cruciate ligament, and there was also mild fibrillation of the medial tibial cartilage surface. We performed arthroscopic partial meniscectomy for the torn medial discoid meniscus but not for the asymptomatic lateral discoid meniscus. The latest follow-up at 18 months indicated satisfactory results.
We report a rare case of ipsilateral medial and lateral discoid meniscus with medial meniscus tear. The medial discoid meniscus with tear was treated with partial meniscectomy, whereas the lateral discoid meniscus without tear was only followed up.
盘状半月板是一种有充分文献记载的膝关节病变，文献中报道了许多内侧或外侧盘状半月板的病例。然而，同侧同时存在内侧和外侧盘状半月板的情况非常罕见，仅有少数病例被报道。在此，我们报告一例同时存在内侧和外侧盘状半月板的病例。
一名27岁的日本男性因右膝内侧关节间隙疼痛就诊，被诊断为完全性内侧和外侧盘状半月板。在磁共振成像中，尽管外侧盘状半月板没有撕裂，但内侧盘状半月板有水平撕裂。对其右膝进行关节镜检查同样发现内侧盘状半月板有水平撕裂。此外，盘状内侧半月板在前交叉韧带处有异常附着，内侧胫骨软骨表面也有轻度纤维化。我们对撕裂的内侧盘状半月板进行了关节镜下部分半月板切除术，而对无症状的外侧盘状半月板未进行处理。18个月的最新随访结果显示效果满意。
我们报告了一例同侧内侧和外侧盘状半月板合并内侧半月板撕裂的罕见病例。对有撕裂的内侧盘状半月板进行了部分半月板切除术，而对无撕裂的外侧盘状半月板仅进行了随访。
