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Distal Radioulnar Joint Piano Key Test

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Other Names

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Piano Key Test
Demonstration of the Piano Key Test[1]
Illustration of the DRUJ ballottement test[2]
  • Piano Key Test
  • Piano Sign
  • Piano Test
  • Stress Test
  • Ballottement Maneuver
  • DRUJ Stress Test
  • DRUJ Ballottement Test
  • Piano Keys Test
  • Piano Key Test (Wrist)
  • Piano Key Sign (Wrist)
  • DRUJ Piano Key Test
  • Distal Radioulnar Joint Instability Test
  • Ulnar Head Piano Key Test
  • Ulnar Head Depression Test
  • Ulnar Head Instability Test

Purpose

Description

  • Patient is seated or standing
  • Stabilize radius with one hand, grip ulna with the other
  • Push up and down on the ulna
  • Positive test
    • Pain or laxity

Pathology

Evidence

Distal Radial Ulnar Joint Instability

  • Wiffels et al[3], LaStayo et al[4]
    • Sensitivity: 65 - 66%
    • Specificity: 44 - 68%
    • PPV: 24%
    • NPV: 81%

See Also

References

  1. ↑ Qazi, Sohail, et al. "Distal radioulnar joint instability and associated injuries: a literature review." Journal of Hand and Microsurgery 13.03 (2021): 123-131.
  2. ↑ Atzei, Andrea, and Riccardo Luchetti. "Foveal TFCC tear classification and treatment." Hand clinics 27.3 (2011): 263-272.
  3. ↑ Wijffels M, Brink P and Schipper I. Clinical and Non-Clinical Aspects of Distal Radioulnar Joint Instability. The Open Orthopaedics Journal 2012;6:204-210. PMID: 22675411
  4. ↑ LaStayo P and Howell J. Clinical provocative tests used in evaluating wrist pain: a descriptive study. J Hand Ther 1995;8(1):10-17. PMID: 7742888
Created by:
John Kiel on 12 July 2019 00:01:12
Authors:
Last edited:
29 April 2026 15:18:21
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