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Limited (L4-S1, L5-S1) Selective dorsal rhizotomy for reducing spasticity in cerebral palsy

LAZAREFF JA; GARCIA MENDEZ MA; DE ROSA R
ACTA NEUROCHIR (Wien) , 1999, vol. 141, n° 7, p. 743-752
Doc n°: 103169
Localisation : Documentation IRR
Descripteurs : AJ23 - PARALYSIE CEREBRALE

Selective posterior rhizotomy is effective for relieving spasticity associated with cerebral palsy. In current techniques dorsal roots from L1/L2 to S1/S2 are selectively divided. With transoperative electromyography (EMG) significant sensory loss has been prevented, but postoperative hypotonia following excessive reduction of the fusimotor drive is still of concern for surgeons and therapists. To decrease the volume of deafferentiated rootlets we proposed a limited selective posterior rhizotomy (LPSR) that limits the extent of the surgery to three (L4-S1) or two (L5-S1) dorsal roots. We present the results of two group of spastic children; group 1 (n = 59, 32 quadriplegic and 27 diplegic) who had a L4-S1 LPSR, and group 2 (n = 12) in whom L5 and S1 were selectively rhizotomized. Posture, passive movilization, range of joint movement, and muscle tone in hip flexors, adductors, leg flexors and plantar flexors were graded according to the method proposed by Sindou and Jeanmonod. In all groups these was a significant reduction of the mentioned parameters (Friedman test p < 0.001) at 6, 12 and 18 months after surgery. The preoperative and postoperative ability to ambulate was classified into five grades. In all groups there was a significant (chi 2 between p < 0.01 and p < 0.001) improvement in the quality of their gait. A third of the patients achieved some form of independent ambulation. Our results suggest that extensive selective deafferentation of the lower limbs is not an absolute requisite for reducing muscle tone or achieving functional improvement in spastic children.

Langue : ANGLAIS

Tiré à part : OUI

Identifiant basis : 2002219001

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