Sulcus Sign

 Sulcus Sign

  • Sulcus Sign is used to test for Multidirectional Instability (MDI)

  • have the patient stand relaxed with their arms at their side.
  • Grab their affected arm and pull it inferiorly.

  • If there is a sulcus that forms at the superior aspect of the humeral head, the test is positive.
  • Sulcus is considered positive if it stays increased (2+ or 3+) with ER at side (pathologic rotator interval)

  • Sensitivity: 28 %
  • Specificity: 97 %


Sulcus Sign

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