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Drop arm test

Medical test

Summary

Medical test

The drop arm test is designed to determine a patient's ability to sustain humeral joint motion through eccentric contraction as the arm is taken through the full motion of abduction to adduction. It will determine if the patient has an underlying rotator cuff dysfunction.

Procedure

The patient is asked to either sit on an examination table or stand while performing this test. Examiner should be standing on the patient's lateral side or behind the arm being evaluated. Examiner will passively abduct the patient's shoulder (humerus) to 90 degrees. The patient is then asked to slowly lower or adduct the shoulder to their side.

If the patient is unable to perform this motion, the examiner can hold the humerus at 90 degrees of abduction and apply slight pressure to the distal forearm. If the patient's arm falls to their side, this also indicates a rotator cuff dysfunction. Inability to controllably lower the arm can indicate a rotator cuff dysfunction, most commonly the supraspinatus.

Mechanism

The drop arm test works by going through subluxation via the humeral head looking for a tear or weakness in the supraspinatus tendon.

Results

A positive test is found if the patient cannot perform this motion of adducting the arm back to the body controllably or if the patient experiences pain while performing this test.

References

References

  1. (2010). "Orthopedic and Athletic Injury Examination Handbook". F.A. Davis Company.
  2. (2000). "Diagnostic values of clinical diagnostic tests in subacromial impingement syndrome". Annals of the Rheumatic Diseases.
  3. "Drop Arm Test".
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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