• ABSTRACT
    • The magnetic resonance imaging and computed tomography arthrographic findings of 36 shoulders with arthroscopically diagnosed detachment of the superior labrum were compared with those of 40 shoulders with a normal superior labrum to detect any findings specific to the injury. In this study we defined a specific magnetic resonance imaging finding as the presence of a linear, high-to-intermediate intensity area between the superior labrum and the glenoid rim on oblique coronal T2-weighted images. We also defined a specific computed tomography arthrography finding as air entering between the superior labrum and the upper part of the glenoid surface. On the basis of these findings magnetic resonance imaging had a sensitivity of 41%, a specificity of 86%, and an accuracy of 63%, whereas computed tomography arthrography had a sensitivity of 45%, a specificity of 93%, and an accuracy of 73%. Thus both of these procedures were specific for these particular findings, but they were neither sensitive nor accurate.