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Test Findings

Shoulder Dislocation

August 24th, 2017


  • Look For

  • Disassociation of the humeral head from the glenoid.
  • Interpretation

  • Anterior dislocation (95%) - anterior, medial and inferior displacement of the humeral headForced extension + abduction + external rotation, direct trauma from behind
  • Posterior dislocation (4%) - posterior displacement of humeral head on axillary viewForced contraction of shoulder muscles
  • Inferior dislocation (1%) - inferior displacement of humeral headForced abduction
In the case of anterior dislocation, look for the associated Bankart lesion (detachment of anterior labrum) and Hill-Sachs lesion (impacted posterolateral humeral head fracture).
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