Abstract: Objective To observe the outcome of selective posterior rhizotomy (SPR) for cerebral palsy children with different gross motor function before operation. Methods 132 cases accepted SPR were grouped with their grades of Gross Motor Function Classification System (GMFCS), and their outcomes were compared. Results The muscle tension, gross motor function and activities of daily living improved in all the groups after SPR (P<0.01). The muscle tone decreased the most in grade I (P<0.01). The gross motor ability improved the most in grade II(P<0.001). The activiti es of daily living improved the most in grades I and IV (P<0.05). Conclusion The outcome of SPR for children with cerebral palsy is various with the gross motor function before operation.

Key words: cerebral palsy, Gross Motor Function Classification System, selective posterior rhizotomy