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Case Reports
. 1991 Jul-Aug;15(4):694-6.
doi: 10.1097/00004728-199107000-00032.

Irreducible posterior dislocation of the shoulder: MR and CT findings

J C Allard  1 , J Bancroft
Affiliations
Case Reports

Irreducible posterior dislocation of the shoulder: MR and CT findings

J C Allard et al. J Comput Assist Tomogr. 1991 Jul-Aug.

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.

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