Abstract
To investigate the preoperative and postoperative differences in the upper-body and spinal shapes of patients with scoliosis. Digitized two-dimensional X-ray images were used to obtain the shapes of the upper-body and spine. The preoperative and postoperative mean shapes were compared by using a Generalized Procrustes analysis. The thin plate spline (TPS) method was used to evaluate the spinal shape deformation between the preoperative and postoperative periods. The pre- and postoperative upper-body and spinal shape differences were significant. The TPS graphics showed highlevel deformations between the pre- and postoperative periods. The left superior border of the L4 spinous process showed the highest deformation. The preoperative and postoperative upper-body and spinal shape differences and structural deformations that correlated with scoliosis were shown to be significant.
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