Spastic equinovarus deformities of the foot produced by overactivity of Posterior tibial tendon in children with cerebral palsy have been treated by authors with split posterior tibial tendon transfer and heel cord lengthening since September, 1983. Nine operations were performed on nine patients and seven patients of them were followed for a mean of two years postoperatively. There were six excellent, one good results according to Kling’s assessment scheme. There were no recurrent equinovarus deformities, nor were any valgus or calcaneal deformities produced.