Clinical Outcomes and Factors Associated with Radiological Resorption in Symptomatic Extruded or Sequestrated Lumbar Disc Herniation: A Retrospective Cohort Study.
Zhenyu Tang, Xiaorong Li, Chengpeng Gong, Zihang Li, Kaiyang Xu, Zhijia Ma, Yan Gong, Hongda Zhou, Xiaochun Li, Zhiqiang Wang, Yucheng Wang, Hong Jiang, Yuxiang Dai, Pengfei Yu, Jintao Liu
{"title":"Clinical Outcomes and Factors Associated with Radiological Resorption in Symptomatic Extruded or Sequestrated Lumbar Disc Herniation: A Retrospective Cohort Study.","authors":"Zhenyu Tang, Xiaorong Li, Chengpeng Gong, Zihang Li, Kaiyang Xu, Zhijia Ma, Yan Gong, Hongda Zhou, Xiaochun Li, Zhiqiang Wang, Yucheng Wang, Hong Jiang, Yuxiang Dai, Pengfei Yu, Jintao Liu","doi":"10.1016/j.spinee.2026.10.013","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>The relationship between resorption and long-term outcomes in extruded or sequestrated lumbar disc herniation (LDH) remains uncertain.</p><p><strong>Purpose: </strong>To evaluate the clinical significance of resorption and factors associated with resorption timing.</p><p><strong>Study design: </strong>Single-center retrospective cohort study.</p><p><strong>Patient sample: </strong>578 patients with symptomatic extruded or sequestrated LDH were managed nonsurgically and followed for ≥ 24 months.</p><p><strong>Outcome measures: </strong>Surgery, symptomatic episodes, Oswestry Disability Index (ODI), visual analog scale (VAS), and Hospital Anxiety and Depression Scale-Anxiety (HADS-A).</p><p><strong>Methods: </strong>Radiological resorption was defined as ≥30% volume reduction, representing at least partial resorption. Generalized estimating equations assessed longitudinal outcomes; time-dependent Cox and landmark analyses assessed surgery; and an interval-censored model assessed resorption timing. Governmental and institutional grants provided US$100,001-500,000. No conflict-of-interest bias was identified.</p><p><strong>Results: </strong>Resorption was documented in 256 patients (44.3%; median, 8.2 months). Surgery occurred in 0.8% versus 24.0%; resorption was associated with lower surgical risk (adjusted HR, 0.067; 95% CI, 0.015-0.292), with consistent landmark findings. The resorption group had fewer symptomatic episodes. ODI and VAS improvement was similar through 6 months but greater thereafter; HADS-A improvement was greater throughout. Komori type III (HR, 6.07; 95% CI, 3.58-10.29) and Modic type I (HR, 2.65; 95% CI, 1.25-5.60) were associated with earlier resorption. Resorption magnitude showed no consistent association with outcomes.</p><p><strong>Conclusions: </strong>Resorption was associated with a more favorable clinical course, but improvement also occurred without resorption. Komori type III and Modic type I were associated with earlier documented resorption; resorption magnitude showed no consistent outcome association.</p>","PeriodicalId":49484,"journal":{"name":"Spine Journal","volume":" ","pages":""},"PeriodicalIF":5.1000,"publicationDate":"2026-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spine Journal","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.spinee.2026.10.013","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background: The relationship between resorption and long-term outcomes in extruded or sequestrated lumbar disc herniation (LDH) remains uncertain.
Purpose: To evaluate the clinical significance of resorption and factors associated with resorption timing.
Study design: Single-center retrospective cohort study.
Patient sample: 578 patients with symptomatic extruded or sequestrated LDH were managed nonsurgically and followed for ≥ 24 months.
Outcome measures: Surgery, symptomatic episodes, Oswestry Disability Index (ODI), visual analog scale (VAS), and Hospital Anxiety and Depression Scale-Anxiety (HADS-A).
Methods: Radiological resorption was defined as ≥30% volume reduction, representing at least partial resorption. Generalized estimating equations assessed longitudinal outcomes; time-dependent Cox and landmark analyses assessed surgery; and an interval-censored model assessed resorption timing. Governmental and institutional grants provided US$100,001-500,000. No conflict-of-interest bias was identified.
Results: Resorption was documented in 256 patients (44.3%; median, 8.2 months). Surgery occurred in 0.8% versus 24.0%; resorption was associated with lower surgical risk (adjusted HR, 0.067; 95% CI, 0.015-0.292), with consistent landmark findings. The resorption group had fewer symptomatic episodes. ODI and VAS improvement was similar through 6 months but greater thereafter; HADS-A improvement was greater throughout. Komori type III (HR, 6.07; 95% CI, 3.58-10.29) and Modic type I (HR, 2.65; 95% CI, 1.25-5.60) were associated with earlier resorption. Resorption magnitude showed no consistent association with outcomes.
Conclusions: Resorption was associated with a more favorable clinical course, but improvement also occurred without resorption. Komori type III and Modic type I were associated with earlier documented resorption; resorption magnitude showed no consistent outcome association.
期刊介绍:
The Spine Journal, the official journal of the North American Spine Society, is an international and multidisciplinary journal that publishes original, peer-reviewed articles on research and treatment related to the spine and spine care, including basic science and clinical investigations. It is a condition of publication that manuscripts submitted to The Spine Journal have not been published, and will not be simultaneously submitted or published elsewhere. The Spine Journal also publishes major reviews of specific topics by acknowledged authorities, technical notes, teaching editorials, and other special features, Letters to the Editor-in-Chief are encouraged.