Tomographic Study of the S2-Alar-Iliac Screw Technique in Brazilian Women

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).

Epidemiology and Mortality of Thoracolumbosacral Spinal Arthrodesis in Brazil: The Last 10 Years

“…In recent years, surgical procedures involving spinal fixation have evolved, beginning in the lumbar region and, later, in the thoracic spine, enabling the correction of various traumatic, oncological, and degenerative diseases, 1 as well as the correction of deformities like scoliosis. 2 Scoliosis is characterized as an abnormal condition of the lateral curvature of the spine that affects on average 3% of the population. 3 It is classified into different types, including congenital, neuromuscular, and idiopathic, 4 which corresponds to 65% of the cases.…”