thumb sign


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thumb sign

Etymology: AS, thuma + L, signum
the flexing of the terminal phalanx of the thumb against the flexed index finger, as in holding a piece of paper. It is observed in patients who are unable to adduct the thumb because of an ulnar lesion. Also called Froment's sign, newspaper sign, signe de journal.
A finding in patients with Marfan syndrome and other inherited connective tissue disorders. The thumb sign is positive if the distal phalanx of the thumb can be opposed beyond the ulnar border of the palm

thumb sign

Protrusion of the thumb across the palm and beyond the clenched fist; seen in Marfan syndrome.
See also: sign
References in periodicals archive ?
The ECP Additional Secretary said that the ECP would dispatch an objectionable ballot paper to the National Database Registration Authority (NADRA) to check the thumb sign and verify its genuineness.