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The wrinkle test (attributed as O'Riain's or Leukens' wrinkle test) is a test of peripheral nerve function. The fingers are placed in warm water for approximately 10 minutes. If the fingers do not wrinkle, this is a sign of denervation.
Video Wrinkle test
See also
- Nerve conduction study
Maps Wrinkle test
References
Source of the article : Wikipedia