To analyze the correlation between the condition of patients with spastic cerebral palsy, including age, sex, weight, number of the affected limb and gross motor function and their rehabilitation effect after selective posterior rhizotomy (SPR) , and to explore the possible factors that contribute to the rehabilitation of motor function in patients with spastic cerebral palsy.

Totally 53 patients with spastic cerebral palsy admitted in the Departments of Orthopedics and Rehabilitation of Dongzhimen Hospital, Beijing University of Chinese Medicine were selected from October 2013 to October 2015. The patients received uniform and standard rehabilitation treatment after SPR, and their motor function was evaluated with the Gross Motor Function Measure (GMFM) before the surgery and six months after the surgery. Then the correlation between the patients' age, sex, weight, GMFM score before treatment and number of the affected limb and the difference in their motor function before and after treatment was analyzed.

The patients' score in improved motor function was negatively correlated with their age (r=-0.30, P<0.01) and weight (r=-0.30, P<0.01) , and not correlated with their sex (r=0.00, P=1.00) , motor function before treatment (r=-0.20, P>0.05) or number of the affected limb (r=-0.20, P>0.05) .

For patients aged between 3 and 25, the earlier they are treated, the better the effect is. The patients should control their weight properly so as not to affect the rehabilitation effect after surgery. The patients' sex, motor function before treatment and number of the affected limb cannot help to predict the recovery of their motor function after surgery. Researchers will continue to conduct large-sample and multi-factor studies in order to verify the current conclusions and analyze the influencing factors of SPR effect in a more comprehensive way.

Spastic cerebral palsy; Selective posterior rhizotomy; Postoperative motor function; Relevant factors