The invention relates to the field of medicine, in particular, to aesthetic medicine, neurology, and orthopedics, and can be used for preventing and correcting defects of posture in the cervicothoracic region of the spine, which makes it possible to reduce the risk of developing functional illnesses of the spine and to significantly improve the aesthetics of the shoulder line in adults. Before injections are administered, the anticipated area of the jabs is treated with antiseptic. On the basis of preliminary marking, a needle puncture is made, and a blunt-tip cannula having a screw-on syringe and botulinum toxin solution is inserted there. The direction of the cannula is into the upper part of the trapezius horizontally and parallel to the muscle fibers, which eliminates the risk of pneumothorax. The drug is injected in a linear-retrograde manner, slowly withdrawing the cannula from the tissues. Without entirely withdrawing the cannula, it is turned in a different plane and again advanced horizontally, the drug is injected in a linear-retrograde manner, and the cannula is pulled out. The method is repeated on the other side. The pectoralis minor follows. Description of the technique. A needle puncture is made in the axillary region and a blunt-tip cannula having a screw-on syringe and botulinum toxin solution is inserted there. The direction of the cannula is into the pectoralis minor muscle, under the pectoralis major muscle, horizontally and parallel to the ribs, which eliminates the risk of pneumothorax.L'invention se rapporte au domaine de la médecine notamment à la médecine esthétique, à la neurologie et l'orthopédie, et peut être utilisée pour la prévention et la correction de troubles du port du rachis cervical et thoracique, ce qui permet de réduire les risques de développement de troubles fonctionnels de la colonne vertébrale et d'améliorer sensiblement l'esthétique de la ligne des épaules chez les adultes. Avant d'effectuer des injections, on effectue un
