TENS is cheap and simple tool for physiotherapist, free of many side effects compared with other tools. so The aim of study was record the effect of TENS on calf muscle tone in spastic cerebral palsy children.

The Significance of this study is to determine whether TENS could have an immediate effect on reduction of spasticity in children diagnosed with spastic cerebral palsy by studying the change of spasticity of ankle plantarflexors immediately after applying TENS to the ankle dorsiflexors.

Muscle tone assessment will be applied before and after the application using objective tool which is electromyography and subjectively by using modified Ashworth scale and goniometer, to be insured is there is an immediate effect of TENS on muscle tone of calf muscle or not.

Inclusion Criteria:

• The children will be included in this study is according to the following criteria

  1. Cerebral palsy spastic diaplegia.
  2. Their age ranged from 3-10 years.
  3. Both Sexes were included.
  4. The subjects with mild to moderate muscle tone according to MAS in which mild is 1 and 1+ , and moderate is 2.

Exclusion Criteria:

• The subject will be excluded if he/she has one or more of the following criteria:

  1. Children with a history of seizures.
  2. Children who could not lie prone for any cause.
  3. Children who could not react to pain.
  4. Children who had applied any surgical procedure which affect muscle tone or any inhibitory injections like BOTOX.

children diagnosed with spastic cerebral palsy diplgeia of both sexes will be selected from El-Menshawy public governmental hospital in Tanta City following the official rules and after gaining the agreements of the parents and explaining the aim and procedures of the study.