Purpose Controversy persists as to whether to end multilevel thoracolumbar fusions
caudally at L5 or S1. Some argue that stopping at L5 may preserve greater function, but …

Abstract Background/Context Degenerative lumbar disease can be addressed via an
anterior or posterior approach, and with or without the use of an interbody cage. Although …

Study Design: Retrospective cohort study. Objectives: To assess whether the addition of L5-
S1 anterior lumbar interbody fusion (ALIF) improves global sagittal alignment and fusion …

Study Design: Retrospective cohort study. Objective: The aim was to investigate the clinical
relevance of preoperative caudal adjacent segment degeneration (ASD) in patients …

Study Design. A retrospective comparison study. Objective. To compare the postoperative
proximal junctional change and revision prevalence as influenced by 3 different proximal …

Study Design: Retrospective cohort study. Objectives: To determine whether preoperative
clinical and radiographic degenerative spondylolisthesis (CARDS) classification is …

Background The degenerative lumbar scoliosis (DLS) patients who mainly complained
about neurogenic claudication due to spinal canal stenosis are well-indicated for short …

Study Design. A retrospective long-term follow-up study. Objective. Evaluate the fate of L5-
S1 disc analyzing subsequent disc degeneration and associated risk factors for …

Study Design. A retrospective investigation of the L5–S1 motion segment after an isolated
L4–L5 posterior lumbar fusion Objective. To determine the survivorship of the L5–S1 …

Study Design. A matched cohort analysis of long adult deformity fusions according to distal
fusion level (L5 vs. S1). Objective. To compare the results of long adult deformity fusions to …