Abstract
Purpose
We sought to clarify the effect of applying derotation maneuvers in the correction of adolescent idiopathic scoliosis (AIS) on the sagittal plane.
Methods
We retrospectively queried a large, multicenter, prospectively collected database for patients who underwent surgical correction of AIS. All patients had at least 2 years of follow-up and documentation as to whether or not a derotation maneuver was performed during surgery. All patients underwent posterior spinal fusion with pedicle screw constructs. Patients who underwent concurrent anterior procedures were excluded.
Results
A total of 323 patients were identified, of whom 66 did not have direct vertebral body derotation (DVBD) maneuvers applied during the deformity correction. The remaining 257 had a vertebral body derotation maneuver performed during their surgical correction. Although no significant differences were identified between the two groups when comparing pre-op and post-op thoracic kyphosis using T2–12 and T5–12 endplates, the absolute change in angulation measured from T2–12 was significantly different between the two groups. Postoperatively, the derotation group had a mean decrease in thoracic kyphosis of 5.1 ± 15.3° as compared to 10.8 ± 18.9° in the control group, P = 0.03.
Conclusion
Although patients in both groups had decreased mean thoracic kyphosis postoperatively, application of DVBD in the correction of scoliosis did not additionally worsen the sagittal profile.
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Acknowledgments
This study was supported by a research Grant from DePuy Spine to the Harms Study Group.
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Hwang, S.W., Samdani, A.F., Gressot, L.V. et al. Effect of direct vertebral body derotation on the sagittal profile in adolescent idiopathic scoliosis. Eur Spine J 21, 31–39 (2012). https://doi.org/10.1007/s00586-011-1991-3
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DOI: https://doi.org/10.1007/s00586-011-1991-3