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Published on: March 23, 2019
MRI study of lumbosacral vertebral curvature before and after birth
Purpose:
To evaluate the changes and influencing factors of the lumbosacral curvature in the sagittal plane before and after birth based on MRI.
Methods:
Cross-sectional study. Normal 63 fetuses and 100 children who underwent lumbar MRI scans from July 2021 to July 2023 were enrolled in the Imaging Department of Shandong Provincial Hospital. Groups 1-4 were the Fetal, Pre-walking, Walking, and Post-walking groups.
Parameters:
lumbar lordosis Angle (LLA), lumbosacral lordosis size (d) = 180°- lumbosacral lordosis Angle (LSLA), sacral tilt (ST), sacral horizontal inclination Angle (SIA). Analysis of variance (ANOVA) and Bonferroni correction were used to compare the parameters among different groups. Independent sample t-test was used for gender differences. Pearson or Spearman correlation analysis was used.
Results:
In all fetus and children: LLA were 20.5 ± 9.1°, 22.0 ± 7.6°, d were 6.0 ± 2.3°, 28.6 ± 6.1°, ST were 12.5 ± 19.4°, 41.6 ± 5.7°, SIA were 19.5 ± 17.8°, 27.4 ± 6.7°. The differences in all parameters were statistically significant. LLA, d, and ST of girls were higher than those of boys in Group 4; There were significant differences in LLA between Group 2 and 4, in d between Group 2 and 3、Group 2 and 4 in boys. There were correlations between LLA and ST, LLA and SIA, d and ST, ST and SIA in fetuses; between age and parameters, and between parameters in children.
Conclusion:
Body posture and walking activity have important effects on lumbosacral curvature.
