AI Article Synopsis
- Recent studies indicate a correlation between pelvic incidence (PI) and spondylolisthesis, but no research has explored the link between facet sagittal angle and spinopelvic parameters like PI in healthy individuals.
- Abdominopelvic CT scans were reviewed from patients under 40 with no spinal issues, focusing on spinopelvic parameters and facet angles at different lumbar levels.
- The study found a significant association between facet sagittal angle and increased PI at the L5-S1 level, suggesting that PI is related to other risk factors like facet tropism and female gender, which could lead to spinal instability and related conditions.
Article Abstract
Background: In recent years, several studies have shown the presence of a linear correlation between the pelvic incidence (PI) and spondylolisthesis. However, no study has attempted to investigate a potential association between facet sagittal angle and spinopelvic parameters, especially PI in the normal population.
Methods: Abdominopelvic computed tomography (CT) scans were collected. Inclusion criteria included age less than 40 years and CT done for non-orthopedic diagnostic purposes. All cases with any spinal pathology were excluded. Spinopelvic and lumbar spinal parameters were collected using the KEOPS software (SMAIO, Lyon, France), and the facet sagittal angle were evaluated on axial CT images from L1-L2 to L5-S1 using the institution PACS system (GE Centricity, Chicago, IL).
Results: A total of 450 patients' imaging were analyzed, with a mean age of 31.3 years (±4.9). Facet sagittal angle was found to be significantly correlated to an increase in PI but only at the L5-S1 level (odds ratio = 2.3). The effect of sex on sagittal angle of facet joints was found to be non-significant compared with high PI. Finally, at the L5-S1 level, facet tropism was associated with a higher PI but was not found to play a direct role in the angle of facet joints.
Conclusions: The PI seems to be correlated to the other spondylolisthesis risk factors: facet tropism and female sex. It carries the heaviest load in the progression towards sagittally oriented facet joints, which might lead to segmental instability and eventual spinal pathologies.
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| http://dx.doi.org/10.1016/j.wneu.2024.11.068 | DOI Listing |
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