İn this study, we evaluated the results of 25 kyphosis cases, surgically treated at our clinic betvveen 1989 and 1993 and we revieved the principles of surgical treatment of the deformity.

9 cases had Scheuermann's kyphosis, 8 had posttraumatic kyphosis and 8 had postinfectious kyphosis. The average age was 22.3 (13-42) and the average follow-up was 2.1 years (1-3.2 years).

Preoperatively, 20 patients complained of pain and 8 cases had neurologic deficit. İn ali cases, except 3 vvith Scheuermann's kyphosis, we performed anterior and posterior combined procedures and we used CD in-strumentation for posterior correction and stabilization.

Average kyphosis angle was 83° (76°-95°) preoperatively, and 38z (30°-62°) postoperatively for the Scheuermann's kyphosis group, and 76° and 42° in the postinfectious and traumatic groups, respectively. Ali cases with neurologic deficit were able to walk vvithout any external support at the last follow-up. Postoperatively there was no pain in 18 patients, mild pain 4 cases, severe pain in 2 cases and radicular pain in 1 case.

Our cases i İki s t ra t e that, in posttraumatic and postinfectious kyphosis progressive neurologic deficit pre-dominates the clinical picture and combined procedures are required, however, in Scheuermann's kyphosis pain predominates the picture and, posterior surgery is required in cases vvith a flexible curve and less than 80 degrees of deformity, and anterior plus posterior surgery are required in cases vvith a more severe and rigid deformity.

Keywords: Spine, sagittal plane defermity, surgical treatment.