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Abstract
This study was conducted to determine the relation between postural kyphosis of school girls in Cairo Governorate to computer usage. Two thousand adolescent girls participated in this study. They were selected randomly from the preparatory and secondary schools in Cairo on the following criteria: 1000 girls from preparatory schools and 1000 girls from secondary schools in Cairo. Their thoracic kyphotic angles and thoracic inclination angles were measured by spinal goniometer. The trunk length was measured by tape measurement. The result of this study found that the percentage for computer users girls who had kyphotic angle >40{u00BA} was 30.8% and for non computer users girls who had kyphotic angle >40{u00BA} was 15.2%. Positive correlations were found between thoracic kyphosis angle and trunk length, age and thoracic inclination angle. Accordingly, it can be concluded that postural kyphosis increased with computer usage in school girls