Objective - to find out dependence of long inspection, and late operations from the sick tuberculosis spondylitis (TS) with presence of complications arising after surgical treatment. Material and methods. The retrospective estimation of complications of surgical treatment of 364 sick TS which was in the Spine Center St.-Petersburg Institute Phthisiopulmonolgy during the period with 2008 on 2010г is spent. To patients it is executed 451 operations. Concerning complications of the previous operative interventions it has been executed 53 (11,8 %) operations. Results. In research the dispersive analysis of influence of various factors (the TS form, duration of disease, prevalence of the process, the amazed department of a backbone, age) on development of postoperative complications is carried out. High statistical reliability (р≤0,001) dependences of occurrence of postoperative complications on the TS form is revealed. At patients with the complicated form of the TS (neurologic infringements, paravertebral abscesses, neurotrophic complications and fistulas) postoperative complications arose more often, than in group with not complicated form. Smaller, but considerable influence on development of postoperative complications was rendered by duration of disease (p <0,05): the more time passed to operations, the complications were more often observed. Prevalence of process statistically authentically influenced development of postoperative complications (p≤0,05). At defeat more than one vertebral segments complications arose more often. Conclusion. Among for the first time revealed sick tuberculosis spondylitis is marked increase in the complicated and widespread forms. Late diagnostics of a tuberculosis leads to an inefficiency of surgical treatment and an exit of the majority of patients on physical inability.