Objective: To study the effect of ankle foot orthoses on improving the abnormal gait pattern in spastic diplegia cerebral palsy children.

Abnormal gait included hemiplegia gait, brain paralysis gait, cerebella gait, peripheral nervous system injury gait, festination, pain gait and spinal column and spinal cord injury gait and so on.

Conclusion: The study indicates that the shorter single support time during the gait cycle in patients is responsible for the abnormal walking velocity , awful gait and decreased ability of walking.