Cheneau type scoliosis brace due to brace indication for adolecant idiopatic scoliosis

"Cobb angle" will be taken as reference to determine the scoliosis angle. For Cobb angle measurement, the angle between the upper border of the upper vertebra and the lower border of the lowest vertebra will be calculated.

In order to determine change of scoliosis angle with brace use, the x-ray image taken just before starting to use the brace and the x-ray image taken while the brace is on the participant (in-brace condition) at the 4th week of brace usage will be evaluated. The difference between the two measurements will be recorded as change of in-brace scoliosis angle.

A nine-degree "Beighton scale" will be used to determine the occurrence of generalized joint hypermobility. Additionally, a five-part questionnaire by Hakim and Graham will be used. Obtaining 4 or more points on Beighton scale and simultaneously at least 2 points in the ques-tionnaire by Hakim and Graham will be adopted as a criterion for generalized joint hypermobility diagnosis.

The evaluation of vertebral rotation on radiographs will be made using the Raimondi method regolo (Marrapese Editore-Demi S.r.1., Rome). In roimondi method; through the offset shadow, the widths of the vertebral body are measured in millimeters. The width of each vertebra is determined on the anterior-posterior X-ray at the most narrow spot, the so called vertebral waist. The convex-sided pedicle is marked and bisected longitudinally by a line. In order to determine the pedicle offset, the distance of this bisecting line to the convexsided waist of the vertebral body is evaluated. The value of vertebral rotation is obtained by inserting the width and the pedicle offset in the Raimondi method regolo. The difference between the two measurements will be recorded as in-brace improvement at scoliosis angle.