title: Irreducible posterior dislocation of the shoulder: MR and CT findings.
abstract: Failure to reduce an acute posterior dislocation of the shoulder is rare and is usually due to the interposition of a structure into the joint. In this paper we report the MR and CT findings of a failed reduction due to interposition of a dislocated biceps tendon between the humeral head and anterior glenoid fossa. This was associated with an avulsed subscapularis tendon with its attachment to the lesser tuberosity and a nondisplaced fracture of the humeral neck, findings which were only evident on MR.
authors.affiliation: Department of Radiology, University of Miami School of Medicine, FL.
authors.forename: J C
authors.initials: JC
authors.lastname: Allard
authors.forename: J
authors.initials: J
authors.lastname: Bancroft
mesh_terms: D000328:Adult; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012783:Shoulder Dislocation / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D014057:Tomography, X-Ray Computed