. A manual of diseases of the nervous system. Fig. 15.—Recent incomplete paralysis of the interossei from a puncturedwound of the ulnar nerve at the wrist: attempt to extend fingers. The lossof extension of the last two phalanges is chiefly marked in the third and fourthfingers, from the influence of the lumbricales (supplied by the median) on theothers. (After Duchenne.) Fig. 16.—Paralysis of the interossei (ulnar nerve) slight in degree : attitudeof fingers at rest. the hand at rest becomes altered. Normally there is slight flexion at all jointsby the tone of the muscles, interossei and long
. A manual of diseases of the nervous system. Fig. 15.—Recent incomplete paralysis of the interossei from a puncturedwound of the ulnar nerve at the wrist: attempt to extend fingers. The lossof extension of the last two phalanges is chiefly marked in the third and fourthfingers, from the influence of the lumbricales (supplied by the median) on theothers. (After Duchenne.) Fig. 16.—Paralysis of the interossei (ulnar nerve) slight in degree : attitudeof fingers at rest. the hand at rest becomes altered. Normally there is slight flexion at all jointsby the tone of the muscles, interossei and long flexors. In paralysis the first 36 ACTION AND PAEALYSIS OF MUSCLES. phalanx is in a line with the metacarpal bones, while the other phalanges areflexed, the middle more than the distal (Fig. 16). In action this flexion isalways increased, the metacarpo-phalangeal joints become over-extended, andthe other joints strongly flexed (Fig. 17). Gradually the hand assumes this Fig. 17. Fia.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnervoussystem, bookye
