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：

雙膝關節; 盤狀半月板; 磁共振成像; 分型; 損傷

DOI：

10.7507/1002-0179.20130586

Video：

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目的　探討膝關節盤狀半月板的診斷標準，雙膝盤狀半月板的MRI分型及損傷特點。方法　通過對2009年11月－2013年3月，13 936膝大樣本量的MRI檢查的盤狀半月板流行病學研究，篩查出雙膝關節盤狀半月板956膝，并對診斷為盤狀半月板的全部患者行冠狀位髁間棘層面半月板寬度與脛骨平臺寬度之比（板面比）、矢狀位“領結樣”改變層面中半月板后角最厚層面的厚度（半月板后角厚度）及矢狀位“領結樣”改變層數測量并分析；根據盤狀半月板MRI表現分為板型、楔型、肥角型；分析雙膝盤狀半月板分型，比較雙膝盤狀半月板損傷率與總體損傷率的差別。結果　956膝盤狀半月板中伴撕裂392膝，損傷率為41.0%；篩查出45例90膝雙膝盤狀半月板，外側44例，內側1例，其中板型58膝、楔型32膝，無肥角型，伴盤狀半月板撕裂23膝，損傷率為25.5%；雙膝盤狀半月板的損傷率低于盤狀半月板總體平均值。結論　板面比≥0.20、半月板后角厚度≥4.40 mm、矢狀位連續“領結樣”改變層數≥3層為盤狀半月板的MRI診斷標準；雙膝盤狀半月板多見于外側，分型中未見肥角型，損傷率較總體損傷率低。

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. 肌肉骨骼系統磁共振成像[M]. 4版. 程敬亮, 祁吉, 史大鵬. 鄭州:鄭州大學出版社, 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. 　王淑麗,王林森,王植.膝關節盤狀半月板類型及損傷的MRI分析[J]. 臨床放射學雜志, 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. 　劉聞欣, 趙金忠, 皇甫小橋, 等.成人有癥狀外側盤狀半月板的關節鏡治療及MRI分型[J].中華臨床醫師雜志, 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,董啟榕,沈鈞康,等.后角肥大型盤狀半月板的動態MRI研究[J].臨床放射學雜志, 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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