Spasticity is a motor disorder that can affect the lower limbs in up to 75% patients with cerebral palsy, having a significantly effect on their mobility and quality of life. There is much controversy about what is the most appropriate treatment of spasticity The objective of the present study is to evaluate the effects of radial extracorporeal shock wave therapy (rESWT) compared to treatment with botulinum toxin to improve spasticity in patients with cerebral palsy