LUMBAR LORDOSIS VARIATION ACCORDING THE TYPE OF POSITIONER USED IN LUMBAR ARTHRODESIS

ABSTRACT Objective: Evaluate the influence of most used surgical positioners for lumbar lordosis (LL) in asymptomatic individuals. Methods: Cross-sectional study based on demographic data and radiographic parameters For this study, 16 volunteers, 15 males, one female were selected, average age was 24.6 years. They submitted to lateral radiographs spine orthostasis use following positioners: gel cushion, cushion with hip extension, four-point Relton-Hall Wilson-type positioner. Results: The mean LL orthostatic position 58.76º, whereas positioner it 52.51; extension 58.23º, Relton-Hall/4points 37.63º and, finally, 40.87º. An reduction 5.42º observed when positioning relation orthostasis. In linear regression analysis, presented statistically significant results (p<0.05), demonstrating that L4-S1 segment influences 60% LL. Conclusion: reproduces an similar physiological values. flexion promote hypolordotic compared basal Hip alone generated a 5.96º increase subject’s lordosis. has individuals are positioners. Level evidence III; Controlled cross-sectional study.