关节造影磁共振成像在检测圆韧带撕裂中的应用及与关节镜检查的相关性。
Use of MR arthrography in detecting tears of the ligamentum teres with arthroscopic correlation.
作者信息
Chang Connie Y, Gill Corey M, Huang Ambrose J, Simeone Frank J, Torriani Martin, McCarthy Joseph C, Bredella Miriam A
机构信息
Division of Musculoskeletal Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA,
出版信息
Skeletal Radiol. 2015 Mar;44(3):361-7. doi: 10.1007/s00256-014-2082-4. Epub 2014 Dec 20.
OBJECTIVE
To demonstrate the normal appearance of the ligamentum teres on MR arthrography (MRA) and evaluate the accuracy of MRA in detecting ligamentum teres tears with arthroscopic correlation.
MATERIALS AND METHODS
Institutional Review Board approval was obtained with a waiver for informed consent because of the retrospective study design. A total of 165 cases in 159 patients (111 females, 48 males; mean age 41 ± 12 years) who underwent both MRA and hip arthroscopy were evaluated for appearance of the ligamentum teres, including the size, number of bundles, and ligamentum teres tears. Marrow edema of the fovea capitis adjacent to the ligamentum teres insertion and the presence of hip plicae were also recorded.
RESULTS
The mean thickness and length of the ligamentum teres were 3.5 ± 1.5 mm and 25.2 ± 3.8 mm, respectively. Sensitivity, specificity, positive and negative predictive value, and accuracy of MRA for the detection of ligamentum teres tears were 78, 97, 74, 97, and 95%, respectively.
CONCLUSION
MRA is an accurate method to evaluate the normal morphology and to detect tears of the ligamentum teres.
目的
在磁共振关节造影（MRA）上展示圆韧带的正常表现，并通过与关节镜检查结果对比，评估MRA检测圆韧带撕裂的准确性。
材料与方法
由于本研究为回顾性研究设计，因此获得了机构审查委员会的批准，并免除了知情同意书。对159例患者（111例女性，48例男性；平均年龄41±12岁）共165例同时接受了MRA和髋关节镜检查的病例进行评估，观察圆韧带的表现，包括其大小、束的数量以及圆韧带撕裂情况。还记录了圆韧带附着处附近股骨头凹的骨髓水肿情况以及髋关节皱襞的存在情况。
结果
圆韧带的平均厚度和长度分别为3.5±1.5毫米和25.2±3.8毫米。MRA检测圆韧带撕裂的敏感性、特异性、阳性预测值、阴性预测值和准确性分别为78%、97%、74%、97%和95%。
结论
MRA是评估圆韧带正常形态及检测其撕裂的一种准确方法。
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