The Impact of Spinopelvic Parameters on the Femoroacetabular Anteversion Angle

Background: We aimed to investigate the relationship between spinopelvic parameters, spinal deformities, and femoral and acetabular anteversion in patients who were candidates for total hip arthroplasty (THA). Methods: The femoral and acetabular anteversion angles were measured using computed tomography (CT) scans. Additionally, spinopelvic parameters were assessed with the appropriate graphs. We utilized SPSS software to analyze the relationship between different types of spinopelvic deformities, spinopelvic parameters, and femoroacetabular anteversion angles. Results: A one-way analysis of variance (ANOVA) showed a significant effect of deformity type on femoral and acetabular version (P < 0.001). Post hoc analysis using Tukey’s honestly significant difference test (HSD) revealed that patients with stuck sitting deformity had significantly higher femoral and acetabular anteversion compared to others (P < 0.001). The anterior pelvic plane (APP) significantly predicted both femoral and acetabular anteversion in the regression model. Conclusion: Our observations indicate that spinopelvic deformities significantly impact femoral and acetabular anteversion, with the “stuck sitting” group exhibiting the highest values.