Delaminated Tears of the Rotator Cuff: Prevalence, Characteristics, and Diagnostic Accuracy Using Indirect MR Arthrography

被引:35
作者
Choo, Hye Jung [1 ]
Lee, Sun Joo [1 ]
Kim, Jung-Han [2 ]
Kim, Dong Wook [1 ]
Park, Young-Mi [1 ]
Kim, Ok Hwa [3 ]
Kim, Seon Jeong [3 ]
机构
[1] Inje Univ, Busan Paik Hosp, Coll Med, Dept Radiol, Pusan 614735, South Korea
[2] Inje Univ, Busan Paik Hosp, Coll Med, Dept Orthoped Surg, Pusan, South Korea
[3] Inje Univ, Haeundae Paik Hosp, Coll Med, Dept Radiol, Pusan, South Korea
关键词
arthrography; MRI; rotator cuff; shoulder; THICKNESS TEARS; REPAIR; INTEGRITY; TENDONS;
D O I
10.2214/AJR.14.12555
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
OBJECTIVE. The purpose of this study was to evaluate the prevalence, radiologic characteristics, and accuracy of diagnosing delaminated tears at the supraspinatus tendon-infraspinatus tendon (SST-IST) on indirect MR arthrography. MATERIALS AND METHODS. Of 531 consecutive shoulders that underwent indirect MR arthrography, 231 shoulders with tears at the SST-IST were included. On the MR images, delaminated tears at the SST-IST, defined as intratendinous horizontal splitting between the articular and bursal layers of the SST-IST with or without different degrees of retraction between the two layers, were identified and classified into six types. Other radiologic findings of the SST-IST, such as the presence of intramuscular cysts, were evaluated. We used video records of 127 arthroscopic surgeries to determine the diagnostic accuracy of indirect MRI for the detection of the delaminated tears at the SST-IST. RESULTS. On MRI, 56% (129/231) of shoulders with SST-IST tears had delaminated tears. Articular-delaminated full-thickness tears (n = 58) and articular-delaminated partial-thickness tears (n = 64) were the most common types. Approximately 82% (36/44) of articular-delaminated full-thickness tears occurring at the SST were combined with articular-delaminated partial-thickness tears at the IST. SST-IST footprint tears and intramuscular cysts were significantly more common in the shoulders with delaminated tears. The sensitivity and specificity of indirect MR arthrography for detection of delaminated tears were 92% and 94%, respectively. CONCLUSION. On indirect MR arthrography, approximately half of the shoulders with SST-IST tears had delaminated tears. The diagnostic accuracy of indirect MR arthrography for detection of delaminated tears was high.
引用
收藏
页码:360 / 366
页数:7
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