Tunnel syndromes of the upper extremities represent a group of compression-ischemic neuropathies caused by compression of peripheral nerves in anatomically narrow spaces. This pathology occupies a leading position in the structure of occupational diseases of the nervous system, comprising up to 35-40% of all cases of peripheral nerve damage in working-age individuals. Epidemiological studies in recent years indicate a steady increase in the incidence of tunnel syndromes, which is associated with changes in the nature of work activity, an increase in the proportion of work requiring prolonged static tension of the muscles of the hand and forearm, as well as the widespread introduction of computer technologies in professional activities. The most common forms are carpal tunnel syndrome (median nerve compression), cubital tunnel syndrome (ulnar nerve compression), and Guyon's canal syndrome. According to international statistical data, the incidence of carpal tunnel syndrome is 1-3 cases per 1000 population per year, with women suffering 3-5 times more often than men.