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Development of a Special Program for Automatic Generation of Scoliotic Spine FE Model with a Normal Spine Model  

Ryu Han-Kyu (단국대학교 기계공학과 대학원)
Kim Young-Eun (단국대학교 기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.3, 2006 , pp. 187-194 More about this Journal
Abstract
Unexpected postoperative changes, such as growth in rib hump and shoulder unbalance, have been occasionally reported after corrective surgery for scoliosis. However there has been neither experimental data fer explanation of these changes, nor the suggestion of optimal correction method. Therefore, the numerical study was designed to investigate the post-operative changes of vertebral rotation and rib cage deformation after the corrective surgery of scoliosis. A mathematical finite element model of normal spine including rib cage, sternum, both clavicles, and pelvis was developed with anatomical details. In this study, we also developed a special program which could convert a normal spine model to a desired scoliotic spine model automatically. A personalized skeletal deformity of scoliosis model was reconstructed with X-ray images of a scoliosis patient from the normal spine structures and rib cage model. The geometric mapping was performed by translating and rotating the spinal column with an amount analyzed from the digitized 12 built-in coordinate axes in each vertebral image. By utilizing this program, problems generated in mapping procedure such as facet joint overlapping, vertebral body deformity could be automatically resolved.
Keywords
Scoliotic spine; Vertebral body deformity; Pedicle unbalance; Facet joint modification; Special program;
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Times Cited By KSCI : 1  (Citation Analysis)
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