[The functional state of the neuromuscular apparatus in patients with Urov (Kashin-Bek) disease].

In order to clarify the state of bioelectrical muscular activity in relation to the severity of the disease and the localization of the pathological process in Urowsche disease, the author examined 107 patients and 27 normals. The achieved data point to quantitative and qualitative differences of the bioelectrical muscular activity in patients and normals. In Urowsche disease in all stages of rest, in deep inhalation and synergia, electrical activity was not present. In a voluntary muscular contraction in 45.5% of the muscles there was type I in the EMG, 33.4% -- type II and 21.1% -- type IV. In all stages of the disease there was a drop in the potential amplitude fasciculation and a decrease in the frequency of acter-action fluctuations. With the development of the disease the frequency of pathological forms in the EMG was statistically higher. These data testify to lesions of the motoneurons and suprasegmental structures.