The results of 40 patients with unstable thoracolumbar vertebral fractures instrumented surgically by Texas Scottish Rite Hospital (TSRH) System in the 1st Department of Orthopaedics and Traumatology, Ankara Social Security Hospital were evaluated. Sixteen (40 %) of the patients were female and 24 (60 %) were male. Mean fol-low up was 13.2 (6-30) months. Mean preoperative sagittal index was 14.2° and was corrected 62.8 % postopera-tively. İn the 76.4 % of the patients TLJ angles came into physiologic limits. Spinal canal compromise regressed 66.7 % in the postoperative period. İn the light of these findings, we concluded that TSRH Instrumentation was an effective way of treating thoracolumbar unstable vertebral fractures.