As the LS junction is at the end of the working length of the entire muscle, the effects of volume and quality of the paraspinal muscles may not be significant compared to the considerable impact of a large cantilever effect in long-level fusion.
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Fusion Length Requiring Spinopelvic Fixation in Lumbosacral Fusion with Anterior Column Support at L5-S1: Assessment of Fusion Status Using Computed Tomography.
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