Abstract
ABSTRACT Objective: Lumbosacral fixation presents problems in its arthrodesis, mainly due to pseudoarthrosis. Iliac screws minimize this problem, however, they show problems in the operative wound. The S2-Alar-iliac (S2AI) screw presents a lower rate of these complications. The anatomical differences between the populations and the sexes analyzed in the literature justify the study of the S2AI screw technique in Brazilian women. Methods: A total of 14 adult female CT scans were analyzed by 4 evaluators. Results: The mean bone length was 131.8 mm, the largest bone diameter was 22.6 mm, and the smallest bone diameter was 22.6 mm. Conclusions: The data presented are compatible with the literature and may assist spine surgeons in choosing the best implant and surgical technique. Level of Evidence I; Diagnostic Studies — Investigating a Diagnostic Test (anatomical investigation).
Highlights
The anatomical differences between the populations and the sexes analyzed in the literature justify the study of the S2AI screw technique in Brazilian women
The pelvic fixation technique described by Kebaish[5] and Sponseller,[6] S2AI, appeared as an alternative in the attempt to resolve the problems of existing techniques
L5-S1 fixation has a high rate of pseudoarthrosis, and Kim et al demonstrated a rate of 24% in the correction of adult scoliosis.[14]
Summary
The anatomical differences between the populations and the sexes analyzed in the literature justify the study of the S2AI screw technique in Brazilian women. Las diferencias anatómicas entre las poblaciones y los sexos analizados en la literatura justifican el estudio de la técnica del tornillo S2AI en mujeres brasileñas.
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