Background   The goal of this study is to compare the results of long segment fixation versus short segment fixation with index level. Methods   Fifty patients were enrolled in two groups twenty five patients each. First group was treated by long segment fixation. Second group was treated by short segment fixation with index level screw. Results This was found to be statistically significant comparing between long segment fixation group with short segment with index level group regarding mean intraoperative blood loss, mean operative time and mean incision length. At the final follow it was found that the mean LKA preoperatively, after 3months and 6 months postoperatively was statistically insignificant.  Conclusion The results of short segment fixation with index level are encouraging and comparable to those of long segment fixation regard correction of local kyphotic angle with less motion segments fixation in short segment group.