Froment's sign

Sign of adductor pollicis weakness in ulnar nerve palsy: when the patient pinches a sheet of paper between thumb and index finger against a pull, flexor pollicis longus substitutes for the weak adductor and the thumb interphalangeal joint flexes. Hyperextension of the thumb metacarpophalangeal joint in the same manoeuvre is Jeanne's sign. Both are motor signs that appear with established weakness and may be absent in early compression.

Pokrewne hasła

• Badanie

  Wartenberg's sign

  Persistent abduction of the little finger with inability to adduct it actively to the ring finger, seen in ulnar nerve palsy: the unopposed extensor and abductor digiti minimi abduct the finger while the weak third palmar interosseous cannot bring it back. It is also seen during ulnar nerve regeneration, occurs rarely without a neuropathy, and is distinct from Wartenberg's syndrome, the compression of the superficial radial nerve.

• Schorzenie

  Zespół rowka nerwu łokciowego

  Ucisk nerwu łokciowego na poziomie łokcia w obrębie kanału łokciowego. Druga co do częstości neuropatia uwięźnięcia kończyny górnej po zespole cieśni nadgarstka. Manifestuje się parestezjami w obrębie palca małego i łokciowej połowy palca serdecznego oraz osłabieniem mięśni wewnętrznych dłoni.

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