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Posterior Shoulder Dislocation
 

Author: Miguel Agrait Gonzalez, MD CAQ-SM
Affiliation: Centro Medico Episcopal San Lucas Emergency Medicine Residency
Co Author(s): Adriana Mercado MD Juan Colon García MD
Senior Editor: Drew Duerson, MD

Clinical Vignette: A 20-year-old male boxer presents to the emergency department with acute right shoulder pain that began during a sparring session approximately one hour prior to presentation. He reports feeling immediate pain during sparring and was unable to continue due to pain. On examination, he holds his right arm in adduction and internal rotation. There is significant pain with attempted motion, particularly external rotation. Point-of-care ultrasound was performed and demonstrated findings consistent with a posterior shoulder dislocation. The patient subsequently received an interscalene nerve block, followed by successful closed reduction without complication.

Type of Probe Used: Curvilinear transducer (2–5 MHz) using a virtual abdomen/MSK preset

View Video

Labeled post-reduction video showing normal articulation of the glenoid and humeral head with internal and external rotation.
View Video

Labeled video showing posterior dislocation with the humeral head posterior to the glenoid in the near field and the glenoid in the far field. Humeral head and glenoid marked on screen.
View Video

Unlabeled post-reduction video showing normal articulation of the glenoid and humeral head with internal and external rotation.
View Video

Unlabeled video showing posterior dislocation with the humeral head posterior to the glenoid in the near field and the glenoid in the far field. 


Unlabeled Long Axis View of the Posterior Glenohumeral Joint Pre-Reduction.


Labeled long axis view of the posterior glenohumeral joint with the humeral head located posterior, in the near field of the image, with the glenoid in the far field consistent with a posterior shoulder dislocation.


Unlabeled Long Axis View of the Posterior Glenohumeral Joint Post-Reduction.


Labeled long axis view of the posterior glenohumeral joint with humeral head visualized within glenoid consistent with successful reduction.

NOTE: For more information, please contact the AMSSM, 4000 W. 114th Street, Suite 100, Leawood, KS 66211 (913) 327-1415.
 

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