Background and aim: Using of F.E.S in rehabilitation program results is auspicious, although there're doubts about FES efficiency in balance and main motor functions amelioration in hemiplegic infants. The research studied the impact of FES in balance and main motor skills improvement in infants diagnosed with hemiparetic cerebral palsy if we placed it on ventral muscle group of leg.
Design and Place: Randomized controlled study in National Institute for Neuro-Motor System in Egypt.

Methodology: 30 infants who are diagnosed with hemiplegic CP aging from 6 to 8 years is chosen from both genders. In two egalitarian sets randomly (control and study). Prior and after 3 months of treatment Assessment was carried out, utilizing Biodex balance system to gauge static balance plus Peabody progressive motor scale to evaluate gross motor functions. Control set is put in an elected Physiotherapy program. The other set (study one) received FES as well as the elected Physiotherapy program.
Results: Study group patients showed a considerable amelioration in main motor skills test. Furthermore, in same group it's showed that balance control was better according to the other set (control group) after training.
Conclusion: Electrical stimulation addition to traditional Physiotherapy program over leg ventral group muscles can ameliorate balance and the gross motor functions in hemiparetic cerebral palsy infants.