During 1990 to 1999, 173 patients were operated on account of cubital tunnel Syndrome at the neurosurgical departement of Masaryk Hospital UL. The surgical method of choice was anterior intramuscular transposition. This study analyses a group of 86 patients, who - after a time interval of 1 to 10 years following operation - answered our questionnaire. We evaluate the incidence of cubital tunnel Syndrome in relation to age, occupation, previous trauma of the elbow and concomitant diseases. Before surgery, 77 patients (89.5 %) suffered from paresthesias, these receded in 30 cases (39 %), became significantly reduced in 25 cases (33 %), remained unchanged in 13 cases (17 %) and deterioraled in 12 cases (14 %). Also the sensibility, subtle hand movements and muscle strength before and after the surgery were evaluated. The overall status after surgery was described as better by 59 patients (69 %), as unchanged by 15 patients (17 %) and as worse by 12 patients (14 %). Repeated surgery - exoneurolysis, due to unsatisfactory result or recurrence of symptoms, was performed in 8 cases, however, in 7 of them without a long-lasting effect. We did not observe a poorer effect of the surgery with advancing age or previous trauma of the elbow. On the other hand presence of a neurological deficit was an unfavourable prognostic sign. We classified as strongly expressed cubital tunnel Syndrome a status, when the patient suffered from a deficit of subtle movements of the fingers. In this tase the patienťs state improved in 64 % vs. 81 %, stayed the same in 21 % vs. 12 %, and deterioted in 15 % vc. 8 %, when the subtle motor function was intact. This fact expresses the necessity of early treatment - before occurence of severe, irreversible neurological deficit. With respect to the pertinent literature and our own experince, we further discuss the choice of optimal surgical methods - subcutaneous, intramuscular and submuscular transposition, giving preference to an individual approach based on the anatomical situation of the patient in question.

        Key words: entrapment Syndrome, cubital tunnel Syndrome, anterior transpositon