EN
Background: Spine is a column that consists of consecutively lined up vertebras. It includes medulla spinalis. It contributes the motions of head, neck and body. Spine is not a straight column. There is a convexity towards the front of the spine (lordosis) at cervical and lumbar areas in adults and a convexity towards the back of the spine (kyphosis) at thoracic and sacral spine areas. Materials and methods: In this study, lateral magnetic resonance images of 731 children between 1 and 16 years of age were examined and their cervical lordosis, thoracic kyphosis and lumbar lordosis angles were measured with Cobb method using ImageJ programme for every age group. Results: The mean calculated cervical lordosis angles in 1–16-year-old children were found to be 20.51º ± 6.11º (minimum 17.96º ± 6.29º, maximum 23.50º ± 4.14º). It has been observed that cervical angle values decrease with age. The mean thoracic kyphosis angle measured was 28.71º ± 6.99º (minimum 24.55º ± 5.65º, maximum 30.44º ± 4.68º). Lumbar lordosis angle was 28.08º ± 7.39º (minimum 20.36º ± 6.59º, maximum 32.68º ± 6.03º). Thoracic kyphosis and lumbar lordosis angle values increased with age. In our study, a statistical difference was found in increasing thoracic kyphosis angle between 1-year-old group and 14-year-old group. Statistical difference was also found in decreasing cervical lordosis angle value between 1-year-old group and 16-year-old group. When we compare our study results with literature values, cervical lordosis values were similar, but lumbar lordosis values were lower. Conclusions: In summary, we think that knowing sagittal plane inclinations of the spine developing in childhood and adolescence will contribute to earlier determination of pathologies. We also hope that it will contribute to clinical stages and other studies in this field. (Folia Morphol 2019; 78, 1: 47–53)