Radiometric analysis of deformity of the thorax and spine following surgical treatment of idiopathic scoliosis using the C-D method.
A group of 61 consecutive patients with AIS were treated surgically using the C-D method. Based on selected radiological markers measured on A-P and lateral radiograms and CT scans at the apex of the curve, and evaluation was made of postoperative changes in the shape of the spine and thorax, and the mutual effects of correcting particular elements of spinal and thoracic deformity were analyzed statistically. Following the C-D operation, statistically significant reductions were recorded in the Cobb angle (60%), axial rotation (RAsag - 9%, RAml - 18%), and thoracic malformation (RHi - 24%). The changes in the shape of the spine on the sagittal plane were not statistically significant. In some cases post-operative increases were observed in the angle of axial rotation and the index of thoracic malformation. The correction of thoracic deformity proved to be associated with shifting the apex of the curve towards the medial line of the body, but on the horizontal plane this effect was negatively correlated, probably due to permanent structural changes. Reduction in the dimension of the costal prominence was associated with changes in axial rotation at the apex of the curvature.
Nowak
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Katedra i Oddział Kliniczny Ortopedii, Slaska Akademia Medyczna, Sosnowiec; Szpital Wojewódzki nr 5 im. Sw. Barbary, Sosnowiec.
Mrozek
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Miecznikowski
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W