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CZECH MEDICAL ASSOCIATION J. Ev. PURKYNĚ |
Journals - Article | |
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ACTA CHIRURGIAE PLASTICAE 41, 4, 1999, pp. 107 - 111 | |
PRECISION GRIP WITH CONGENITAL HYPOPLASTY OR
HYPOFUNCTION OF THE THUMB Smrčka V. 1 , Dylevský I. 2 , Kuklík M. 1 1 Center for Patients with Locomotor Defects, Prague, Czech Republic 2 Department of Anatomy, 2nd Medical Faculty, Charles University, Prague, Czech Republic |
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Summary: We tested the grip in four patients with congenital defects of the hand and either a hypoplastic thumb or a thumb
with impaired inervation. Small objects were taken by a scissors grip between the fingers. In a hand with radial
duction in the manus vara congenita, during strengthening of the wrist, the grip from the ulnar side between the
fourth and fifth fingers was changed to the radial side between the second and third fingers. Large objects were
gripped by all the three-phalanx fingers into the palm in a horizontal position. In case 4 with hypoplasia of the
thumb grade IIIC by the classification of Blauth and Buck-Gramcko, we describe a transposition of the index fin-
ger to the site of the thumb and the hypoplastic thumb to the site of the index finger. It is obvious that the preci-
sion grip is affected by the thumb length and strengthening of the ulnar side of the wrist. We assume that the
scissors grip is the earliest precision grip in the evolution of the primate hand.
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