• Robert J Rothrock, Ian T McNeill, Kurt Yaeger, Eric K Oermann, Samuel K Cho, and John M Caridi.
• Department of Neurosurgery, Mount Sinai Icahn School of Medicine, New York, New York, USA. Electronic address: Robert.Rothrock@mountsinai.org.
• World Neurosurg. 2018 Oct 1; 118: 21-31.

ObjectiveThe goal of this study was to conduct an evidence-based quantitative assessment of the correction of lumbar lordosis achieved by each of the 3 principal lumbar interbody fusion techniques: anterior lumbar interbody fusion (ALIF), lateral lumbar interbody fusion (L-LIF), and transforaminal lumbar interbody fusion (TLIF).MethodsA systematic review of the literature was conducted to identify studies containing degrees of correction of lumbar lordosis achieved by ALIF, L-LIF, and TLIF as shown on standing lumbar radiography at least 6 weeks after surgical intervention. Pooled and Forest plot analyses were performed for the studies that met inclusion criteria.ResultsFor ALIF, 21 studies were identified with mean correction 4.67° (standard deviation [SD] ± 4.24) and median correction 5.20°. Fifteen studies were identified that met criteria for Forest plot analysis with mean correction 4.90° (standard error of the mean [SEM] ± 0.40). For L-LIF, 17 studies were identified with mean correction 4.47° (SD ± 4.80) and median correction 4.00°. Nine studies were identified that met criteria for Forest plot analysis with mean correction 2.91° (SEM ± 0.56). For TLIF, 31 studies were identified with mean correction 3.89° (SD ± 4.33) and median correction 3.50°. Twenty-five studies were identified that met criteria for Forest plot analysis with mean correction 5.33° (SEM ± 0.27).ConclusionsWe present the current evidence-based mean correction for each of the 3 principal lumbar interbody fusion techniques based on standing radiographic data.Copyright © 2018 Elsevier Inc. All rights reserved.

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