The determination of at least moderate severity of affection and fulfilling working conditions given in the list of occupational diseases are decisive for accepting an occupational damage to the nervus ulnaris in the elbow area. In a retrospectively evaluated set of 44 persons with an occupational lesion of the nervus ulnaris an EMG criterion of decreased conduction velocity through the nervus ulnaris fibres around the elbow below 40 m/s has been considered as disturbance of moderate severity, the velocity of 50 m/s was thought the lower limit of normal values. In 20 patients, the disease was accepted after the average job duration of 15.8 years as a disorder due to overloading upper extremities, female electricians were affected most often. In 24 subjects the disease was accepted after the average of 23.9 years of work with vibrating tools, metal cutters suffered from the disorder most often. Frequent coincidence of an occupational lesion of the nervus ulnaris in the elbow area with other disorders of the locomotor apparatus and nerves of upper limbs has been stated. The carpal tunnel syndrome was diagnosed simultaneously in 70.4 % of the set, cervicobrachial syndrome was revealed in one-half of the affected.

        Key words: occupational cubital tunnel syndrome, over-limit vibrations, overloading upper extremities