J Trauma
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Computed tomographic (CT) evaluation of seven posterior shoulder dislocations in five patients is reported. Computed tomography provided better visualization of the trough fracture in the humeral head than did conventional x-ray films or tomography. ⋯ The two cases of bilateral dislocation and one case of unilateral dislocation were caused by seizures. The two other cases of unilateral dislocation were caused by trauma.
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A retropharyngeal abscess resulted from perforation of the posterior pharyngeal wall by an anterior marginal osteophyte at the time of hyperextension injury of the cervical spine. The abscess communicated with the epidural space via the disrupted intervertebral disk, leading to the delayed onset of upper airway obstruction and tetraparesis.