Sun-Jin Lee MD, Presenter: Nothing to Disclose

Won-Hee Jee MD, Abstract Co-Author: Nothing to Disclose

Hee Sun Jeong MD, Abstract Co-Author: Nothing to Disclose

So Yeon Lee MD, Abstract Co-Author: Nothing to Disclose

Yang-Soo Kim MD, Abstract Co-Author: Nothing to Disclose

Jung-Man Kim MD, Abstract Co-Author: Nothing to Disclose

To determine the reliability and accuracy of magnetic resonance (MR) arthrography for the diagnosis of partial articular supraspinatus tendon avulsion (PASTA) lesions.

One hundred thirty one patients who had arthroscopy over a 47 months period and had MR arthrography were included. There were 66 men and 65 women (age range, 21-85 years; mean age, 52 years). The average delay between the MR examination and shoulder arthroscopy was 2.3 months (range, 6 days to 11 months). MR imaging was performed with 1.5 T imagers. MR images were independently scored by two observers (one experienced musculoskeletal radiologist and the other musculoskeletal fellow with one-year experience) for the presence of PASTA lesions. Interobserver agreement for detection of PASTA lesions was calculated using κ coefficients. The differences in areas under the receiver operating characteristic (ROC) curves were assessed using a univariate z-score test.

At arthroscopy there were 22 PASTA lesions. Sensitivity, specificity and accuracy of each reader were 82% (18/22), 97% (106/109), and 95% (124/131); and 59% (13/22), 89% (97/109), and 84% (110/131), respectively. Interobserver agreement for PASTA lesions was moderate (κ= 0.58). The areas under the ROC curves for each reader were 0.96 and 0.85, which were not significantly different.

MR arthrography of the shoulder is reliable and accurate for detection of PASTA lesions.

Partial articular supraspinatus tendon avulsions (PASTA) is a subgroup of partial-thickness rotator cuff tears and deserving special consideration in terms of different surgical procedure.

Lee, S, Jee, W, Jeong, H, Lee, S, Kim, Y, Kim, J, Partial Articular Supraspinatus Tendon Avulsions (PASTA): Reliability and Accuracy of Diagnosis with MR Arthrography.  Radiological Society of North America 2007 Scientific Assembly and Annual Meeting, November 25 - November 30, 2007 ,Chicago IL. http://archive.rsna.org/2007/5009921.html