The Effect Of Selective Posterior Rhizotomy On Eye Function In Children With Spastic Cerebral Palsy

ObjectiveTo observe the effect of selective posterior rhizotomy(SPR)on the eye function of children with spastic cerebral palsy.Methods20 children with spastic cerebral palsy associated with ocular dysfunction were selected and underwent selective posterior rhizotomy(SPR).Strabismus,muscle tension and eye movement function were examined before operation,2 weeks after operation and 6 months after operation.Through the data analysis before and after SPR,the effect of SPR on the ocular function of children with spastic cerebral palsy was observed and the possible mechanism was discussed.Results(1)2 weeks and 6 months after SPR,the muscle tension of children was significantly lower than that before operation(P<0.01).There was no significant change in muscle tension at 6 months after SPR compared with 2 weeks after operation.(2)There were 6 cases(30%),the degree of strabismus was alleviated after the operation.14 cases(70%)no change after the operation.The average angle of strabismus was reduced from 32.5 to 14.83,in the 6 cases whom condition got better.(3)After 6 months of SPR,the correlation coefficient of smooth pursuit eye movement(SPEM)was higher than that before operation,the difference was statistically significant.Conclusions(1)SPR can significantly reduce the muscle tension of lower extremities in children with spastic cerebral palsy.(2)SPR can reduce the degree of strabismus in some children with spastic cerebral palsy accompanied by strabismus.(3)The improvement of eye motor function in children with spastic cerebral palsy may be related to SPR.(4)The effect of SPR on the eye function of children with spastic cerebral palsy,supporting the theory of "periphery-cortex-periphery".