The authors describe the effects of kynesiotherapy in 24 children with motor impairments caused by peripheric nerve lesions. The evaluation of muscular strength was performed by manual musculary tests, used by the N.F.I.P. (N.Y.) and, according to the musculary deficits in each case, a kynesiotherapy program was followed, based on the progressive resistance exercises of De Lorme. The patients were also submitted to exercises to develop basic functions of daily living (prehension and walking). All the patients were treated with ACTH and cortisone during the acute period. In 23 patients (99.8%) it was possible to obtain the recuperation of the ability to prehension and walking; in one case (0.2%), a partial recuperation of walk. The rate duration of kynesiotherapy during the period of internation was 45 days. These results show that peripheric polineuropathies are beneficiated by hormonetherapy in the acute period and the motor recuperation is shortened using early kynesiotherapy.