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KMID : 0388720050120040281
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Journal of Korean Society of Spine Surgery
2005 Volume.12 No. 4 p.281 ~ p.288
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Posterior Correction of Idiopathic Scoliosis With using Transpedicular Screw Fixation
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Chung Jae-Yoon
Lee Jae-Joon
Seo Hyoung-Yeon
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Abstract
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Study Design:This is a retrospective study.
Objectives:We wanted to determine the effectiveness of performing transpedicular screw fixation in idiopathic scoliosis surgery by evaluating the radiological results.
Literature Review Summary:Deformity correction using pedicle screw fixation in scoliosis surgery is one of the most effective methods of treatment. However, the extent of correction and the complication rate are quite variable.
Materials and Methods:We evaluated the radiological results of performing posterior correction with using transpedicular screws in sixty patients who were suffering with idiopathic scoliosis. The follow-up duration was 39 months (range: 12 to 91 months). The changes of the coronal and sagittal geometry in the major and compensatory curves were measured according to the Cobb method with using the anteroposterior and lateral radiographs in the standing and lateral bending positions before the surgery and at the final follow-up.
Results:In the coronal plane, the average correction rate of the major curve was 77% and that of the compensatory curve was 72% on the immediate postoperative radiographs. In the sagittal plane, the Cobb angle in those patients who had a hypokyphosis under 15 degrees was improved from 9.0 degrees to 21.2 degrees. The angle between the lowest instrumented vertebra and T10, and also the lumbar lordosis did not change significantly. The correction rate of the rotational deformity of the apical vertebra was 55%, and that of the translation degree was 68%. The correction rate of the translation of the lowest instrumented vertebra was 54% and that of the tilting angle was 77%. No patients had a significant loss of correction in the coronal or sagittal plane at the latest follow-up.
Conclusions:Posterior correction using transpedicular screws was an effective method for treating idiopathic scoliosis, and it resulted in a high correction rate at the major curve and the compensatory curve even with short segment fixation, and it reduced the loss of the correction angle.
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KEYWORD
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Idipoathic scoliosis, Posterior correction, Transpedicular screws, Radiological results
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