Modality: X-ray (Frontal)

- “ Posterior shoulder dislocation demonstrated on initial plain films (trough line sign and loss of normal half moon overlap sign) .  Post reduction...”

Used in the following article:

  • Shoulder radiograph (an approach) - “ Shoulder radiographs are common films to see in the Emergency Department, especially during the weekend after sporting events. Systematic review ...”
  • Posterior shoulder dislocation - “ Posterior shoulder dislocations are far less common than anterior shoulder dislocations and can be difficult to identify if only AP projections ar...”
  • Trough line sign - “ The trough line sign is a sign of posterior shoulder dislocation on AP films.  In a posterior dislocation, the anterior aspect of the humeral hea...”

View full size version of Posterior shoulder dislocation with reverse Hill-Sachs and reverse Bankart lesions

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