Presentation
Epileptic. Seizure and shoulder pain.
Patient Data
Age: 20 years
From the case:
Posterior glenohumeral joint dislocation
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/93798/annotated_viewer_json?lang=us"}
'Lightbulb' sign of the humeral head, with the axillary view confirming a posterior glenohumeral joint dislocation with an engaging reverse Hill-Sachs defect. An entonox device overlies the chest.
Case Discussion
The lightbulb sign occurs when the humeral head is posteriorly dislocated causing humeral head internal rotation giving this appearance. A second view should be used to confirm these findings, or CT when positioning can be difficult due to pain and/or associated fracture.
Unable to process the form. Check for errors and try again.