We need you! See something you could improve? Make an edit and help improve WikSM for everyone.
Piano Key Test
From WikiSM
Other Names
- Piano Key Test
- Piano Sign
- Piano Test
- Stress Test
- Ballottement Maneuver
- DRUJ Stress Test
Purpose

Demonstration of the Piano Key Test[1]
- Evaluate the stability of the DRUJ or Distal Radial Ulnar Joint
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
See Also
References
- ↑ Qazi, Sohail, et al. "Distal radioulnar joint instability and associated injuries: a literature review." Journal of Hand and Microsurgery 13.03 (2021): 123-131.
- ↑ 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
- ↑ 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