Brain abnormalities detected on magnetic resonance imaging of amphetamine users presenting to an emergency department: a pilot study.

Objectives: To determine the prevalence of occult brain abnormalities in magnetic resonance imaging of active amphetamine users.

Design, Setting And Participants: Prospective convenience study in a tertiary hospital emergency department (ED). Patients presenting to the ED for an amphetamine-related reason were eligible for inclusion.

Unilateral lumbosacral facet joint dislocation without associated fracture.

In the lumbosacral spine, unilateral facet joint dislocation is an infrequent injury, which is often associated with fractures at the involved or other lumbar levels. The rare occurrence of unilateral lumbosacral facet joint dislocation without any associated fractures is presented with CT and MRI, and surgical correlation. To our knowledge, cross-sectional imaging of this injury has not previously been described in the published literature.