20607 脊柱側弯症肋骨の左右長差の測定(OS9 バイオエンジニアリング)

概要

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In scoliosis not only spinal deformation but also costal deformation occur. Etiologically it is generally understood that costal deformation is the result of spinal deformation. But some researches suspect that in some of AIS (Adolescent Idiopathic scoliosis) the costal deformation causes the spine deformation. This idea is that the difference of growth rate between the left costal with the right costal bone causes the lateral curvature of spine. Recently the acquisition of three dimensional (3D) geometrical data of bones by 3D analysis software based on the 3D reconstruction of CT images became easy. Therefore this paper investigates the relation of the difference between left and right costal lengths and scoliosis. Five scoliosis subjects and 3 healthy subjects were examined. The result shows that in scoliosis subjects the location having the maximum difference between the left and the right costal bones in the range from T3 to T10 was at apex vertebra of scoliosis spine in overall and the costal bone of concave side of scoliosis was longer than that of convex side. And it also shows that the average difference was about 20mm in length or 5%.
社団法人日本機械学会の論文
2005-03-17