A treatise on the principles and practice of medicine . Fig. 72.—Brown-Sequards par-alysis from a left-sided focus: a, vaso-motor and motor paralysis; b and d,cutaneous anesthesia; c, hyperesthe-tic zone. (Erb.) Fig. 73.—(Combined from Brown-Sequard.)F, focus in left side of cord; V, pyramidal fibershaving crossed in medulla; V, vasomotor fibers,not crossing in cord; , fibers for muscle sense,not crossing in cord; S S SS, other sensoryfibers crossing in the cord. The focus explainsthe classical signs and also how few of thecrossed sensory fibers to the left side are in-volved (merely
A treatise on the principles and practice of medicine . Fig. 72.—Brown-Sequards par-alysis from a left-sided focus: a, vaso-motor and motor paralysis; b and d,cutaneous anesthesia; c, hyperesthe-tic zone. (Erb.) Fig. 73.—(Combined from Brown-Sequard.)F, focus in left side of cord; V, pyramidal fibershaving crossed in medulla; V, vasomotor fibers,not crossing in cord; , fibers for muscle sense,not crossing in cord; S S SS, other sensoryfibers crossing in the cord. The focus explainsthe classical signs and also how few of thecrossed sensory fibers to the left side are in-volved (merely a zone of anesthesia), while allsensory fibers to the right side are severed(hemianesthesia). Symptoms.—Exact hemiseclion of the cervical cord produces a spinalhemiplegia on the side of the section, but in injuries and experimentsthe trauma is rarely complete or strictly unilateral. (In some casesdecussation of the uncrossed pyramidal tracts may occur in the cordlower down than the usual crossing point in the medulla (Flechsig)and spinal hemiplegia with contralateral monoplegia may result from uni-lateral lesion.) The characteristic clinical type is the mid-dorsal lesion,but in cervical section or in patho
Size: 1411px × 1772px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphiladelphialeafeb
