Test: Internal Rotation Lag Sign

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Background/Purpose

Internal Rotation Lag Sign is a shoulder exam test which is done in order to assess the rotator cuff in the shoulder. or to test the subscapularis tendon tear's presence in the human shoulder.

Procedure

In order to perform this test, the affected shoulder/arm is moved into the position of maximal internal rotation in the way that the dorsum of the patient's hand is resting on their lumbar spine. After it, the examiner is required to grasps the forearm of patient and lifts the dorsum away from the lumbar region. The examiner releases the forearm while supporting the elbow. The positive test is when the patient is unable to maintain the internally rotated position off the lumbar spine.
Performed: Bilaterally

Dialog

The shoulder of patient is moved into the position of maximal internal rotation

Criteria

• No swelling
• Weakness while lifting and rotating arm
• Crackling sensation while moving shoulder

Measurement

20.00 degrees

LOINC Code

0

Scale/Grading

Pass/Fail