Test Findings
 

Shoulder Dislocation

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Overview

    • 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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