Purposes: To evaluate the validity of pedicle screw fixation in 20 patients with toracolumbar spine infections.

Methods and Materials: There were seven tuberculous and thirteen pyogenic infection, eight had thoracic and 12 had lumbar lesion. The indications for surgical treatment were; progressive bone destruction, mal-alignment or neurological deficit. On nine cases, we did two-step operation, which was bone graft from anterior and pedicle screw fixation from posterior. On 11 cases, we did debridement, interbody graft and the pedicle screw fixation from posterior simultaneously. We examined the outcomes of the infection, symptoms including neurological deficit and the graft bones postoperatively with follow-up period of 25 months in the average. We also examined changes of alignment after surgery and surgical complications as well to evaluate the validity of the surgery.

Results: Fusion of graft were confirmed in all cases within seven and half months in the average. Clinically, all of 14 patients who had had paraparesis gained neurological recovery of one or two steps of Frankel’s criteria after the surgery. Complications were, fracture of graft, fracture of vertebral body, screw loosening with alignment deterioration and recurrence of infection in one case each.

Summary: Pedicle screw fixation revealed a usefulness in surgical treatment of spine infection.