title: Indicators of superior glenoid labral detachment on magnetic resonance imaging and computed tomography arthrography.
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.
authors.affiliation: Department of Orthopaedic Surgery, Osaka Kosei-Nenkin Hospital, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yoneda
authors.forename: K
authors.initials: K
authors.lastname: Izawa
authors.forename: A
authors.initials: A
authors.lastname: Hirooka
authors.forename: K
authors.initials: K
authors.lastname: Hayashida
authors.forename: S
authors.initials: S
authors.lastname: Wakitani
mesh_terms: D000293:Adolescent; D000328:Adult; D001175:Arthrography; D002358:Cartilage, Articular / Q000000981:diagnostic imaging / Q000293:injuries*; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012421:Rupture; D000070599:Shoulder Injuries; D012785:Shoulder Joint / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014947:Wounds and Injuries / Q000175:diagnosis