MRI Classification and Lesion Characteristics of Bilateral Discoid Meniscus_West China Medical Journal

Authors：

LI Dongming ¹ , DENG Kaihong ² , ZHANG Yang ¹ , ZHANG Tao. ¹

1. Sichuan Provincial Orthopedics Hospital, Chengdu, Sichuan 610041, P. R. China; 2. Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;

Corresponding author：

Keywords：

双膝关节; 盘状半月板; 磁共振成像; 分型; 损伤

DOI：

10.7507/1002-0179.20130586

Video：

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目的　探讨膝关节盘状半月板的诊断标准，双膝盘状半月板的MRI分型及损伤特点。方法　通过对2009年11月－2013年3月，13 936膝大样本量的MRI检查的盘状半月板流行病学研究，筛查出双膝关节盘状半月板956膝，并对诊断为盘状半月板的全部患者行冠状位髁间棘层面半月板宽度与胫骨平台宽度之比（板面比）、矢状位“领结样”改变层面中半月板后角最厚层面的厚度（半月板后角厚度）及矢状位“领结样”改变层数测量并分析；根据盘状半月板MRI表现分为板型、楔型、肥角型；分析双膝盘状半月板分型，比较双膝盘状半月板损伤率与总体损伤率的差别。结果　956膝盘状半月板中伴撕裂392膝，损伤率为41.0%；筛查出45例90膝双膝盘状半月板，外侧44例，内侧1例，其中板型58膝、楔型32膝，无肥角型，伴盘状半月板撕裂23膝，损伤率为25.5%；双膝盘状半月板的损伤率低于盘状半月板总体平均值。结论　板面比≥0.20、半月板后角厚度≥4.40 mm、矢状位连续“领结样”改变层数≥3层为盘状半月板的MRI诊断标准；双膝盘状半月板多见于外侧，分型中未见肥角型，损伤率较总体损伤率低。

Citation： LI Dongming,DENG Kaihong,ZHANG Yang,ZHANG Tao.. MRI Classification and Lesion Characteristics of Bilateral Discoid Meniscus. West China Medical Journal, 2013, 28(12): 1854-1857. doi: 10.7507/1002-0179.20130586 Copy

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1. 　Berquuist TH. 肌肉骨骼系统磁共振成像[M]. 4版. 程敬亮, 祁吉, 史大鹏. 郑州:郑州大学出版社, 2001: 361.
2. 　Sun Y, Jiang Q. Review of discoid meniscus[J]. Orthop Surg, 2011, 3(4): 219-223.
3. 　Rohren EM, Kosarek FJ, Helms CA. Discoid lateral meniscus and the frequency of meniscal tears[J]. Skeletal Radiol, 2001, 30(6): 316-320.
4. 　王淑丽,王林森,王植.膝关节盘状半月板类型及损伤的MRI分析[J]. 临床放射学杂志, 2004, 23(1)：66-69.
5. 　Smillie IS. The congenital discoid meniscus[J]. J Bone Joint Surg Br, 1948, 30B(4): 671-682.
6. 　Murlimanju BV, Nair N, Pai SR, et al. Bilateral incomplete discoid lateral meniscus in a 14 weeks fetus: a case report and review of literature[J]. Rom J Morphol Embryol, 2011, 52(2): 729-731．.
7. 　Kaplan EB. Discoid lateral meniscus of the knee joint[J]. J Bone Joint Surg Am, 1957, 39(1): 77-87.
8. 　Watanabe M. Arthroscopy of the knee joint[M]. Philadelphia: Lippincott, 1974: 145-159.
9. 　Hall FM. Arthrography of the discoid lateral menisci[J]. AJR, 1977, 128(6): 993-1002.
10. 　Bae JH, Lim HC, Hwang DH, et al. Incidence of bilateral discoid lateral meniscus in an Asian population: an arthroscopic assessment of contralateral knees[J]. Arthroscopy, 2012, 28(7): 936-941.
11. 　刘闻欣, 赵金忠, 皇甫小桥, 等.成人有症状外侧盘状半月板的关节镜治疗及MRI分型[J].中华临床医师杂志, 2012, 6(14): 3990-3995.
12. 　Atay A, Pekmezci M, Doral MN, et al. Discoid meniscus: an ultrastructural study with transmission electron microscopy [J]. Am J Sports Medi, 2007, 35(3): 475-478.
13. 　汪益,董启榕,沈钧康,等.后角肥大型盘状半月板的动态MRI研究[J].临床放射学杂志, 2008, 27(5): 652-654.
14. 　Kim SJ, Chun YM, Jeong JH, et al. Effects of arthroscopic meniscectomy on the long-term prognosis for the discoid lateral meniscus[J]. Knee Surg Sports Traumatol Arthrosc, 2007, 15(11): 1315-1320.

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