Background: Curve correction is the main aim in treatment of adolescent idiopathic scoliosis (AIS). Many methods were published for correction and the most common method now is curve correction through posterior approach. Objective: This study was conducted to assess curve correction in cases of adolescent idiopathic scoliosis that were operated through posterior approach by ordinary pedicle screws. Patients and methods: This was a retrospective study carried out at Al-Azhar University Hospitals between November 2018 and August 2019. Twenty (20) patients with AIS were treated through posterior approach by ordinary pedicle screw. The patients were cooperative and reliable. The sample was comprised of 17 female and 3 male patients with a mean age of 15.3 ± 2.9 years (range 10 - 20 years). Results: The results were analyzed and compared with the results published by other authors which revealed that SRS 24 questionnaire with an average of 100.2 (of total score 120 representing good outcome). All patients gained height ranged from 3 cm to 8 cm with an average of 4.6 cm. Correction of rib hump ranged from 2.2 cm to 7.4 cm with an average of 4.5 cm (about 77%). Conclusion: Finally, we concluded that all pedicle screw constructs are reliable in the treatment of AIS, while longer follow up period is needed.