METHOD OF DIAGNOSING THE LEVEL OF DAMAGE TO THE PRIMARY AND SECONDARY MOTOR BRANCHES OF THE BRACHIAL PLEXUS WITH A SYNDROME OF COMPLETE CONDUCTION DISTURBANCE ALONG ITS TRUNKS Russian patent published in 2023 - IPC A61B5/05 A61N2/08 

FIELD: medicine, functional diagnostics, neurosurgery.

SUBSTANCE: invention can be used to diagnose the level of damage to the primary and secondary motor branches of the brachial plexus with a syndrome of complete conduction disturbance along its trunks. Skin electrodes are applied to the muscles innervated by the long motor branches of the brachial plexus: on one of the heads of the triceps muscle of the shoulder — the radial nerve, on the muscle that abducts the fifth finger of the hand — the ulnar nerve, on the short muscle that abducts the first finger of the hand — the median nerve, on one of the heads of the biceps muscle of the shoulder — the musculocutaneous nerve. A stimulus is applied with a coil of a magnetic stimulator to the area of the projection of the branches of the brachial plexus with the registration of evoked muscle responses (VMO) innervated by the damaged trunk of the peripheral nerve of the muscles below M1 and above M2 of the level of the clavicle. The ratio of M1 to M2 values of each motor nerve of the brachial plexus is determined, and if the ratio of M1 to M2 is greater than 1.5 at all registration points, the supraclavicular level of damage to the brachial plexus is diagnosed. If the ratio of M1 to M2 values is less than 0.5 at all points of registration the subclavian level of damage to the brachial plexus is diagnosed. If the ratio of M1 to M2 values is greater than or equal to 0.5 and is less than or equal to 1.5 at least at one point of registration, then damage to the primary and secondary branches of the brachial plexus is diagnosed.

EFFECT: invention provides high information content of diagnosing the level of damage to the primary and secondary motor branches of the brachial plexus involved in the cicatricial adhesive process, reduces the number of technical means used, and also excludes the use of invasive techniques.

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