METHOD FOR DYNAMIC CORRECTION OF MUSCLE PARALYSIS INNERVATED BY THE MARGINAL MANDIBULAR BRANCH OF THE FACIAL NERVE Russian patent published in 2021 - IPC A61B17/24 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to maxillofacial surgery, and can be used for dynamic correction of muscle paralysis innervated by the marginal mandibular branch of the facial nerve by cutting off the tendon of the digastric muscle from the hyoid bone, cutting the posterior belly of the digastric muscle and rotating the digastric muscle to the position of the muscle lowering the lower lip and the muscle lowering the corner of the mouth with neurotization of the anterior belly of the digastric muscle by the facial nerve through the autoinsertion of the sural nerve. In this case, the digastric muscle is used as a donor muscle flap from the contralateral side relative to the side of the paralysis. The preauricular approach is performed on the contralateral side relative to the side of the paralysis with exposure of the stem and the buccal branch of the facial nerve and the formation of a subcutaneous tunnel to the submental area into which the sural nerve isolated by a tendon stripper is placed. The submandibular approach is performed on the contralateral side with cutting off the tendon of the digastric muscle from the hyoid bone and transecting the posterior belly of the digastric muscle. The submental approach is performed on the contralateral side with the formation of a subcutaneous tunnel to the border of the skin and the mucous membrane of the lower lip on the ipsilateral side into which the digastric muscle is rotated. After that the displaced digastric muscle is fixed with sutures to the soft tissues of the lower lip on the ipsilateral side. Afterwards, neurotization of the anterior belly of the digastric muscle with the buccal branch of the facial nerve is performed using the autoinsertion of the sural nerve.

EFFECT: invention provides increase in functional and aesthetic results due to the use of safe donor areas taking into account congenital anatomical features or burdened medical history.

1 cl, 3 dwg, 1 ex

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