Experiments performed on dogs showed that the formation of scoliotic deformity of the lumbar spine sharply affects the hemodynamics of the back muscles, which manifested in asymmetric arterial blood fl ow, increased blood supply to the tissues, and impaired venous outflow. The changes were more pronounced on the apex of epy developing deformity. Correction of scoliotic deformity gradually restored blood circulation in muscles of the back. The use of methods of functional diagnostic for evaluation of the status of blood circulation in the tissues of the back has diagnostic value and allows evaluation of the treatment efficiency.