The objective of the present study was to develop indications for the surgical obliteration of the frontal sinus (FS) and evaluation of the results of this treatment in the patients with pathological conditions in FS resulting from an injury. A total of 49 patients (19 women and 30 men) aged from 16 to 72 years with various post-traumatic pathologies affecting the frontal sinus were examined and treated. The time span between receiving the injury and admittance to the hospital varied from 3 months to 18 years. Forty four (89.8%) patients of the 44 enrolled in the study underwent obliterative surgery. During the follow-up period, 38 (86.4%) patients of the 44 had no complaints and were completely satisfied with the cosmetic outcome of the treatment. The following conclusions were drawn from the results of this study. (1) preoperative examination of the patients suffering the consequences of an injury to the frontal sinus must include CT and MRI for the determination of the changes that do not allow to preserve FS intact as an air cavity. (2) the indications for obliterative surgery on the frontal sinus include lateral localization of mucocele, nasal liquorrhea through the frontal sinus, extensive cicatrical and/or bony obliteration of the frontal ostium, extensive lesions of FS mucosa and inefficient FS draining by the median drainage technique for the treatment of polypous pansinusitis. (3) the surgical approach for frontal sinus obliteration depends on the character of traumatic skin changes in the frontal region and the size of the sinus. (4) MRI of paranasal sinuses in the postoperative period is of high informative value for both the estimation of the transplant state and the diagnostics of complications.