ELECTRONIC GUIDE TO THESES APPROVED BY DEPARTMENT OF Basic Science P Pr re ep pa ar re ed d b by y N Ne er rv ve ee en n A Ab bd d E El l S Sa al la am m A Ab bd d E El l K Ka ad de er r A Ah hm me ed d 1 Department of Basic Science Master Degree 2012 Author : Abdelrhman Ismail Abdelghany. Title : Correlation Between Cobb’s Angle and Three Dimensional Posture Changes In Adolescent Idiopathic Scoliosis. Dept. : Department of Basic Science. Supervisors 1. Omaima Mohamed Ali Kattabie. 2. Fathi Hussin Ali. 3. Ibrahim Moustafa Moustafa Abu Amer. Degree : Master. Year : 2012. Abstract : Background: Scoliosis is a condition that involves a lateral curvature and rotation of the spine that could cause noticeable posture deformities. There were several trials to assess the posture deformities that may associated with scoliosis. The purpose: to investigate the correlation between Cobb’s angle and three dimensional changes of the head, rib cage and pelvis in adolescent idiopathic scoliotic patients .Subjects: Thirty patients, their age ranged from (11 – 15 years) with a mean (12.63±1.326) years participated in this study. Method: Rotation around x,y,z axes, translation around x,z axes were measured by postureprint soft ware for head, rib cage, and pelvis regions and full spine radiograph were taken for every patients. Results: There was significant correlation between Cobb’s angle and 3D head changes (P ≤ 0.05) except changes around translation z axis (p=0.979) . There was significant correlation between Cobb’s angle and 3D rib cage changes (P ≤ 0.05) except changes around rotation y axis (p=0.267). There was significant correlation between Cobb’s angle and 3D pelvis changes (P ≤ 0.05) except changes around rotation y and z axes (p=0.668, 0.382). Conclusion: There is a correlation between Cobb’s angle and 3D posture changes of head, rib cage, and pelvis. Key words 1. Adolescent idiopathic scoliosis. 2. 3D. 3. Cobb’s angle. 4. Three Dimensional Posture. 5. Posture Changes. 6. Idiopathic Scoliosis. Arabic Title Page : ز١غ اثداء ااحلخ ال حا فام التؼاد فح ا١زاخ ثلث١رغب تا و٠ سال ػل ظثةف اؼز مزا ا فرز ففمزد اؼ . Library register number : 2889-2890.