. A manual of diseases of the nervous system. Fig. 13.—Posture of the hand in contraction of the palmar fascia, resemblingthat in paralysis of the long extensors of the finger. Fig. 14. — Paralysis of the fibres of the flexor sublimis which act on the twomiddle fingers: twelve years duration. The second phalanges of these fingersare bent backwards and subluxated from the contracture of the unopposedinterossei, while the last plialanges are kept in position by the unaffectedflexor profundus. (After Duchenne.) When the extensor of the fingers is in strong action, extending the proximalphalanges,
. A manual of diseases of the nervous system. Fig. 13.—Posture of the hand in contraction of the palmar fascia, resemblingthat in paralysis of the long extensors of the finger. Fig. 14. — Paralysis of the fibres of the flexor sublimis which act on the twomiddle fingers: twelve years duration. The second phalanges of these fingersare bent backwards and subluxated from the contracture of the unopposedinterossei, while the last plialanges are kept in position by the unaffectedflexor profundus. (After Duchenne.) When the extensor of the fingers is in strong action, extending the proximalphalanges, the action of the flexors on the second and third joints is very strong(tearing position). In paralysis of these muscles the power of flexing the lasttwo joints is lost, but the interossei still flex the metacarpo-phalangeal of the deep flexor alone causes merely loss of the power of flexingthe distal joint, but this impairs many movements, such as playing on thepiano. In paralysis of these muscles, the unopposed tone o
Size: 1278px × 1955px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectnervoussystemdisease
