Background: Adolescent idiopathic scoliosis, in which obvious curves are visible in\nradiographic images, is also seen in combination with lumps in the back. These lumps\ncontribute to inclination, which can be measured by a scoliometer. To the authorsââ?¬â?¢\nknowledge, there are no previous formulas combining thoracic and lumbar scoliometer\nvalues simultaneously to predict thoracic and lumbar Cobb angles, respectively.\nThis study aimed to create more accurate two-parameter mathematical formulas for\npredicting thoracic and lumbar Cobb angles.\nMethods: Between Dec. 2012 and Jan. 2013, patients diagnosed with idiopathic scoliosis\nin an outpatient clinic were enrolled. The maximal trunk rotations at the thoracic\nand lumbar regions were recorded with a scoliometer. Right asymmetry hump was\ndeemed positive (+), and left asymmetry hump was deemed negative (âË?â??). The Cobb\nangles were measured with a Picture Archiving and Communication System. Statistical\nanalysis included Pearsonââ?¬â?¢s correlation coefficient, multivariate regression and Blandââ?¬â??\nAtman analysis.\nResults: One-hundred and one patients were enrolled in our study. The average thoracic\ncurve (TC) was 23.3 Ã?± 1.8Ã?°, while the average lumbar curve (LC) was âË?â?? 23.3 Ã?± 1.4Ã?°.\nThe thoracic inclination (TI) and lumbar inclination (LI) were 4.5 Ã?± 0.7 and âË?â?? 5.9 Ã?± 0.6,\nrespectively. The one-parameter formula for the thoracic curve was TC = 2.0 TI + 14.3\n(r = 0.813); for the lumbar curve, it was LC = 0.9 LI âË?â?? 16.9 (r = 0.409). By multivariate\nregression, the two-parameter formulas for the thoracic and lumbar curves were\nTC = 2.6 TI âË?â?? 1.4 LI (r = 0.931) and LC = âË?â?? 1.5 TI + 2.0 LI (r = 0.874), respectively. The\ntwo-parameter formulas were more accurate than the one-parameter formulas.\nConclusions: Based on the results of these two-parameter formulas for thoracic and\nlumbar curves, the Cobb angles can be predicted more accurately by the readings\nof the scoliometer. Physicians and other healthcare practitioners can thus evaluate\npatients with scoliosis more precisely than before with a scoliometer
Loading....