The Efficacy of Botulinum Toxin Type a Injection in the Hamstring and Calf Muscles With and Without Serial Foot Casting in Gait Improvement in Children With Cerebral Palsy

Background: The goal of this study was to compare the efficacy of botulinum toxin type A (BTX-A) injection in the hamstring and calf muscles with and without ankle serial casting in the improvement of gait in children with cerebral palsy (CP).Methods : This double-blind prospective clinical trial was performed on 25, 2 to 8-year-old children with hemiplegic or diplegic CP in Tehran, Iran in 2010. The participants were chosen by simple randomized sampling and were matched for age, gross motor function classification system (GMFCS) and type of CP and were randomly divided into two groups: children in the first group (13) only received BTX-A injection, but the second group (12) received BTX-A and serial foot casting starting one week after the injection.Results : Comparison of the gross motor function, right and left knee spasticities and passive ROM of both knees between the two groups before and 1, 3, 6 and 12 months after the injections were not statistically significant (P>0.1). Furthermore, comparison of the right and left ankle spasticities and passive ROM before the injections and in1 and 3-month follow-ups did not show a statistically significant difference (P>0.1), but the differences were significant in 6 and 12-month follow-ups (P