Abstract
Introduction
The aim of the study to evaluate the effect on sagittal spinal balance parameters postoperatively between short segment Bone-On-Bone anterior spinal fusion (ASF) and selective posterior spinal fusion (PSF) treated adolescent idiopathic scoliosis (AIS) (Lenke1A & 5C) patients.
Material and Methods
This prospective study evaluates radiographs (lateral and AP view) for sagittal spinal balance parameters pre and postoperatively on 36 AIS (Lenke1A & 5C) patients, who were divided into two groups of 18 each according to the treatment underwent in a single clinical institute since 2006–2013. Group 1 underwent short segment Bone-On-Bone ASF (mean age 17 years, 12–25) and Group 2 with selective PSF (mean age 16 years, 12–27).
Results
In Group 1, lumbar lordosis and sacral slope decreased (mean pre-op 50.4 & 38.6 to mean post-op 36.0 & 35.4), pelvic tilt increased (mean pre-op 12.8 to mean post-op 14.5), whereas thoracic kyphosis and pelvic incidence were similar enough to pre-op values.
In Group 2, lumbar lordosis, sacral slope, pelvic incidence and pelvic tilt were decreased(mean pre-op 41.9, 35.5, 56.1 & 16.0 to mean post-op 34.1, 29.7, 52.7 & 12.1), whereas thoracic kyphosis similar enough to pre-op value.
Conclusion
According to our study, no significant difference found in sagittal spinal balance parameters postoperatively on radiographs between two groups except with slight decrease in lumbar lordosis post-op mean value in both groups. So, our study suggest that short segment Bone-On-Bone ASF and selective PSF procedures do not affect the sagittal spinal balance significantly in the treatment of Lenke1A and 5C type AIS cases postoperatively.