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[Snapping palmar drawer phenomenon of the wrist: a physiologic or pathologic study finding?]
1Handchirurgischen Station, Inselspitals Bern.
Handchirurgie, Mikrochirurgie, Plastische Chirurgie : Organ Der Deutschsprachigen Arbeitsgemeinschaft Fur Handchirurgie : Organ Der Deutschsprachigen Arbeitsgemeinschaft Fur Mikrochirurgie Der Peripheren Nerven Und Gefasse : Organ Der V
|March 1, 1988
Summary
A specific wrist maneuver, involving moderate ulnar deviation, elicits a palmar drawer translation and snap in normal wrists. This physiologic sign is crucial for assessing wrist stability and aiding differential diagnosis.
Area of Science:
- Orthopedics
- Biomechanics
- Anatomy
Context:
- Wrist examination
- Differential diagnosis of wrist instability
- Physiologic wrist motion
Purpose:
- To describe a specific clinical sign elicited during wrist examination
- To establish the physiologic nature of this sign in normal wrists
- To highlight its importance in assessing wrist stability
Summary:
- A palmar drawer translation and snap are consistently elicited in normal wrists held in neutral and moderate ulnar deviation (approx. 15 degrees).
- This sign is most pronounced at 15 degrees of ulnar deviation and absent in neutral, radial, or maximal ulnar deviation.
- The described phenomenon is considered a normal, physiologic finding in wrist biomechanics.
Impact:
- Enhances understanding of normal wrist biomechanics.
- Provides clinicians with a valuable diagnostic tool for wrist stability assessment.
- Aids in differentiating normal wrist findings from pathology during clinical examination.