Drop Sign

 Drop Sign

  • Drop Sign is used to test the Integrity of the infraspinatus

  • The patient is seated with his or her back to the examiner.
  • The affected arm is held at 90 degrees of elevation in the scapular plane and at almost full external rotation with the elbow flexed at 90 degrees.
  • The patient is asked to maintain this position actively as the examiner releases the wrist while supporting the elbow, which is mainly a function of the infraspinatus

  • The Drop Sign is positive if a lag or “drop” occurs.

  • Sensitivity: 73 %
  • Specificity: 98 %

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