Results of Posterior Spinal Instrumentation Alone to Correct Adolescent Idiopathic Scoliosis: Siriraj Hospital’s Experience

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Published: Apr 30, 2010
Keywords:
adolescent idiopathic scoliosis posterior instrumentation Cobb angle proximal junctional kyphosis

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Khuntisuk S, MD
Department of Orthopedic Surgery, Faculty of Medicine, Siriraj Hospital, Bangkok, Thailand
Thanapipatsiri S, MD
Department of Orthopedic Surgery, Faculty of Medicine, Siriraj Hospital, Bangkok, Thailand
Chotivichit A, MD
Department of Orthopedic Surgery, Faculty of Medicine, Siriraj Hospital, Bangkok, Thailand
Sanpakit S, MD
Department of Orthopedic Surgery, Faculty of Medicine, Siriraj Hospital, Bangkok, Thailand

Abstract

Purpose: To evaluate the results of posterior instrumentation in correcting adolescent idiopathic scoliosis in Siriraj Hospital.


Methods: A retrospective analysis was conducted on patients who had posterior instrumentation to correct adolescent idiopathic scoliosis at Siriraj Hospital between January 1999 and December 2006. All had a minimum of 2 years’ follow-up.


Results: This study showed that this method is effective to correct a very large curve of more than 90°. In different constructs, this study revealed that there were no statistically significant differences between the groups with pedicle screw constructs and hybrid constructs in frontal and sagittal plane correction. Similarly, there was no statistically significant difference between Lenke Type 1, 3, and 5 groups in frontal and sagittal plane correction. Our results demonstrated a strong relationship between proximal junctional kyphosis, hybrid instrumentation (proximal hooks and distal pedicle screws), and preoperative larger sagittal thoracic Cobb angle (T5-T12 ≥ 40°).


Conclusion: The posterior instrumentation alone corrected adolescent idiopathic scoliosis satisfactorily at Siriraj Hospital. However, this study needs greater patient numbers and a long term follow-up period. Our results demonstrated a strong relationship between proximal junctional kyphosis, hybrid instrumentation (proximal hooks and distal pedicle screws). and preoperative larger sagittal thoracic Cobb angle (T5-T12 ≥ 40°).

Article Details

Issue
Vol. 34 No. 1-2 (2010): January-April
Section
Original Articles

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