If the patient holds a piece of paper between the index finger and thumb, the thumb flexes. An indication of ulnar nerve palsy.
The sign was first described in 1904 by Breeman on the basis of a patient with traumatic paresis of Ramus profundus nervi ulnaris.
- J. Froment:
La préhension dans les paralysies du nerf cubital et le signe du pouce.
La presse médicale, Paris, 1915, 23: 409.
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