Evidence map›Paper›PMID 41022430›Full record

ArticleJournal of Korean Neurosurgical Society2025

Prediction of Angle Loss after L4/5 Oblique Lumbar Interbody Fusion : Development of a Risk Stratification Model.

Se Woon Kim, Su Hun Lee, Jun Seok Lee, Chi Hyung Lee, Chang Hyeun Kim, Soon Ki Sung, Dong Wuk Son, Sang Weon Lee

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In one paragraph

Article in Journal of Korean Neurosurgical Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Se Woon KimDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Su Hun LeeDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Jun Seok LeeDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Chi Hyung LeeDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Chang Hyeun KimDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Soon Ki SungDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Dong Wuk SonDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Sang Weon LeeDepartment of Neurosurgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.

Funding

Pusan National University
6 · The paper itself

Abstract

objectiveTo evaluate the influence of preoperative disc morphology and cage-related variables on disc angle change following single-level L4/5 oblique lumbar interbody fusion (OLIF), and to identify predictors of postoperative angle loss and angular subsidence.

methodsThis retrospective study analyzed 80 patients who underwent L4/5 OLIF with posterior percutaneous screw fixation and 1-year radiographic follow-up. Radiographic parameters included preoperative disc angle (DAPRE), sacral slope (SS), and cage position along the anteroposterior axis (Cage_Y). Postoperative disc angle loss was defined as a decrease in disc angle immediately after surgery. Angular subsidence was defined as a decrease in disc angle at follow-up compared to the postoperative period multivariate logistic regression was used to identify independent predictors of these outcomes. Threshold values were determined by receiver operating characteristic curve analysis.

resultsDAPRE >6.0°, SS <32.0°, and posterior cage placement (Cage_Y <1.9 mm) were independently associated with immediate angle loss. Among them, DAPRE showed the strongest predictive power (odds ratio, 7.9). Additionally, a greater initial angular gain was associated with a higher risk of angular subsidence. Based on these three parameters, a risk score (0-3 points) was generated, which showed a stepwise increase in the incidence of angle loss (0% to 81.3%) and subsidence over follow-up.

conclusionDAPRE, SS, and Cage_Y are key predictors of disc angle outcomes after OLIF. This model provides a simple, clinically applicable tool to predict alignment maintenance and optimize surgical planning in degenerative lumbar conditions.

Indexed as

LordosisLumbar regionMinimally invasive surgical proceduresOblique lumbar interbody fusionRisk assessmentSpinal fusion

Identifiers

PMID41022430
PMCPMC12582894

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.