Tears of the glenoid labrum: MR imaging of 88 arthroscopically confirmed cases.
Two hundred eighty-one patients underwent magnetic resonance (MR) imaging of the shoulder over a 2-year period. Eighty-eight patients underwent arthroscopic surgery, and their surgical results were correlated with the findings at MR imaging. MR imaging enabled accurate prediction of anterior labral tears, with a sensitivity of 95%, a specificity of 86%, and an accuracy of 92%. MR imaging was less effective in the prediction of tears of the superior labrum, with a sensitivity of 75%, a specificity of 99%, and an accuracy of 95%. These two categories accounted for the majority of the surgically correctable disease. MR imaging was found to be unreliable in the prediction of posterior (sensitivity, 7.7%) or inferior (sensitivity, 40%) labral tears, isolated cases of which occurred in only two (2%) of those undergoing surgery. MR imaging proved to be a highly accurate, noninvasive technique for the clinical evaluation of shoulder instability.
Legan
J M
JM
Department of Radiology, Naval Hospital San Diego, CA 92134-5000.
Burkhard
T K
TK
Goff
W B
WB
Balsara
Z N
ZN
Martinez
A J
AJ
Burks
D D
DD
Kallman
D A
DA
O'Brien
T J
TJ
Lapoint
J M
JM
D000293:Adolescent; D000328:Adult; D000368:Aged; D001182:Arthroscopy; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D000070599:Shoulder Injuries; D012785:Shoulder Joint / Q000473:pathology / Q000601:surgery