中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (7): 1104-1109.doi: 10.3969/j.issn.2095-4344.2017.07.022

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

MRI形态学指标评价儿童外侧盘状半月板损伤

孙晓新1,周 伟2,左淑萍3,刘 昊1,宋敬峰1,梁春雨1   

  1. 1华北理工大学附属医院,河北省唐山市 063100;2唐山市第三医院,河北省唐山市 063100;3唐山工人医院,河北省唐山市  063100
  • 修回日期:2017-01-10 出版日期:2017-03-08 发布日期:2017-04-11
  • 作者简介:孙晓新,男,1970年生,河北省唐山市人,汉族,2008年河北联合大学毕业,硕士,副主任医师,主要从事运动损伤与关节疾病的治疗研究。
  • 基金资助:

    河北省科技支撑项目(152777139)

Morphological characteristics for the magnetic resonance imaging assessment of discoid lateral meniscal tears in children  

Sun Xiao-xin1, Zhou Wei2, Zuo Shu-ping3, Liu Hao1, Song Jing-feng1, Liang Chun-yu1   

  1. 1Affiliated Hospital of the North China University of Science and Technology, Tangshan 063100, Hebei Province, China; 2Third Hospital of Tangshan City, Tangshan 063100, Hebei Province, China; 3Tangshan Gongren Hospital, Tangshan 063100, Hebei Province, China
  • Revised:2017-01-10 Online:2017-03-08 Published:2017-04-11
  • About author:Sun Xiao-xin, Master, Associate chief physician, Affiliated Hospital of the North China University of Science and Technology, Tangshan 063100, Hebei Province, China
  • Supported by:

    the Science and Technology Support Program of Hebei Province, No. 152777139

摘要:

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文题释义:
盘状半月板:盘状半月板也称盘状软骨,是一种先天性半月板解剖变异,因其自身形态近似圆盘形而得名,其在东亚人群中的发病率较高。无症状的盘状半月板一般无需治疗,而症状性盘状半月板损伤多需手术治疗,因此明确盘状半月板损伤与否至关重要。
症状性外侧盘状半月板损伤:相较正常形态外侧半月板而言,外侧盘状半月板自身形态及组织结构均存在异常,因此更容易损伤。外侧盘状半月板损伤后常引发严重的临床症状,如膝关节疼痛、弾响以及屈伸活动受限等,因此症状性外侧盘状半月板损伤多需手术治疗。
 
摘要
背景:目前盘状半月板损伤后的形态学变化特征尚不完全清楚,用于评价盘状半月板损伤的形态学指标还有待深入探索。
目的:探讨依据形态学指标评价儿童外侧盘状半月板损伤的特异性及敏感性。
方法:回顾性分析具有术前完整MRI影像资料并经关节镜手术证实的儿童外侧盘状半月板损伤病例73例(76膝)。由一名经验丰富的影像学副主任医师(医师甲)和一名运动医学科主任医师(医师乙)采用双盲法独立分析所有病例的膝关节MRI图像。采用“游离缘内移征、游离缘肥厚征、肥角征”3个形态学征象作为评价外侧盘状半月板损伤的指标。以膝关节镜检查结果作为诊断金标准,计算上述3个形态学指标评价儿童外侧盘状半月板损伤的敏感性、特异性和诊断准确率,并采用Kappa检验评价2名医师诊断结果的一致性。
结果与结论:①医师甲依据“游离缘内移征”诊断外侧盘状半月板损伤的敏感性、特异性和准确率为19%,94%和53%;医师乙的相应值为21%,97%和55%;②医师甲依据“游离缘肥厚征”诊断外侧盘状半月板损伤的敏感性、特异性和准确率为52%,100%和74%;医师乙的相应值为57%,97%和75%;③医师甲依据“肥角征”诊断外侧盘状半月板损伤的敏感性、特异性和准确率为26%,97%和58%;医师乙的相应值为24%,100%和58%;④医师甲凭借联合形态学指标诊断外侧盘状半月板损伤的敏感性、特异性和准确率为86%,91%和87%;医师乙的相应值为88%,94%和 91%;⑤Kappa评价显示,2名医师采用上述形态学指标评价外侧盘状半月板损伤的一致性好(K值 > 0.75,P < 0.001);⑥结果说明,采用孤立形态学指标评价外侧盘状半月板损伤的特异性较好,但敏感性偏低,而联合应用多种形态学指标可以显著提高诊断的敏感性。形态学指标在儿童外侧盘状半月板损伤的MRI评价中具有一定价值。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0001-8523-2799(孙晓新)

关键词: 骨科植入物, 关节植入物, 外侧盘状半月板, 儿童, 形态, 核磁共振成像

Abstract:

BACKGROUND: Currently, the morphologic characteristics of the torn discoid lateral meniscus remain unclear, and morphological indexes used to evaluate the discoid lateral meniscus tears still need to be explored.

OBJECTIVE: To discuss the specificity and sensitivity of discoid lateral meniscal tears in children using morphological indexes. 
METHODS: Seventy-three patients (seventy-six knees) with torn discoid lateral meniscus underwent arthroscopy and MRI data of knee examinations were retrospectively reviewed. All MR images were double-blinded, independently, retrospectively analyzed by attending radiologist (doctor A) and sports physician (doctor B). The following morphological signs of discoid lateral meniscus, such as a internal displaced free edge sign, a hypertrophic free edge sign and a hypertrophied-horn sign, were selected to evaluate the discoid lateral meniscus tears. The likelihood of the discoid lateral meniscus tears was analyzed on basis of arthroscopic findings constituted the gold standard. Sensitivity, specificity and accuracy of MRI diagnosis of the discoid lateral meniscus tears by two physicians were calculated, and the consistency of diagnosis results by two physicians was evaluated using the Kappa statistics.
RESULTS AND CONCLUSION: (1) The sensitivity, specificity and accuracy in the diagnosis of discoid lateral meniscus tears by internal displaced free edge sign for doctor A were 19%, 94% and 53%, respectively, and for doctor B were 21%, 97% and 55%. (2) The sensitivity, specificity and accuracy in the diagnosis of discoid lateral meniscus tears by hypertrophic free edge sign for doctor A were 52%, 100% and 74%, respectively, and for doctor B were 57%, 97% and 75%. (3) The sensitivity, specificity and accuracy in the diagnosis of discoid lateral meniscus tears by hypertrophied-horn sign for doctor A were 26%, 97% and 58%, respectively, and for doctor B were 24%, 100% and 58%. (4) The sensitivity, specificity and accuracy in the diagnosis of discoid lateral meniscus tears by binding morphological index for doctor A were 86%, 91% and 87%, respectively, and for doctor B were 88%, 94% and 91%. (5) The Kappa statistics for discoid lateral meniscus tears respectively demonstrated a good inter-observer agreement (K > 0.75, P < 0.001). (6) These findings suggest that single morphological index used to evaluate the discoid lateral meniscus tears shows a good specificity, but which also shows a low sensitivity, while a binding morphological index can significantly improve the diagnostic sensitivity. Morphological characteristics may be reliable indexes to evaluate the discoid lateral meniscal tears in children. 

 
中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Menisci, Tibial, Magnetic Resonance Imaging, Tissue Engineering

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