Biomechanical Comparison of Lumbosacral Fixation Using Luque-Galveston and Colorado II Sacropelvic Fixation: Advantage of Using Locked Proximal Fixation

Abstract

The 2 methods of sacropelvic fixation provided similar construct stiffness, although the Colorado II method had less L5-S1 motion on flexion-extension testing, and the Galveston construct tended (although not statistically) to be stiffer in torsional loading. The addition of a pair of L1 pedicle screws increased the construct stiffness for both constructs by approximately 50%.