title: Magnetic resonance imaging evaluation of the inferior glenohumeral ligament: non-arthrographic imaging in abduction and external rotation.
abstract: The anterior band of the inferior glenohumeral ligament is the most important restraint for preventing traumatic anterior glenohumeral instability. The condition of this ligament markedly affects the results of arthroscopic Bankart repair. We compared non-arthrographic magnetic resonance imaging (MRI) in abduction and external rotation and arthroscopic findings of the ligament in 51 shoulders with traumatic anterior glenohumeral instability. The condition of the ligament was evaluated based on the presence of a thick low-signal band between the anterior labrum and the head of the humerus in all magnetic resonance images obtained from the 3- to 5-o'clock position of the glenoid rim (right shoulder). The sensitivity and specificity of the MRI evaluation were 94% and 82%, respectively. MRI in abduction and external rotation is fairly useful for predicting the condition of the ligament in advance of invasive measures (ie, arthroscopy).
authors.affiliation: Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Takubo
authors.forename: Motoyuki
authors.initials: M
authors.lastname: Horii
authors.forename: Masao
authors.initials: M
authors.lastname: Kurokawa
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Mikami
authors.forename: Daisaku
authors.initials: D
authors.lastname: Tokunaga
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Kubo
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis; D008023:Ligaments, Articular / Q000033:anatomy & histology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012399:Rotation; D012680:Sensitivity and Specificity; D012785:Shoulder Joint