JOR Spine最新文献

{"title":"Causal Relationship Between Gut Microbiota, Blood Metabolites, and Intervertebral Disc Degeneration: A Two-Step, Two-Sample Bidirectional Mendelian Randomization Study","authors":"Yi-Ping Zheng,&nbsp;Dong-Lin Yang,&nbsp;Lu-Yang Wang,&nbsp;Xi-Zhong Zhu,&nbsp;Xing-Chen Li,&nbsp;Jin-Hong Miao,&nbsp;Yu-Sheng Xu","doi":"10.1002/jsp2.70078","DOIUrl":"https://doi.org/10.1002/jsp2.70078","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Some studies have shown that gut microbiota may be associated with intervertebral disc degeneration. However, the causal effects between gut microbiota and IVDD and whether blood metabolites act as a mediator remain unclear. The objective of this study was to investigate the causal relationship between gut microbiota and intervertebral disc herniation, with a focus on the potential mediating role of blood metabolites.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Gut microbiota, blood metabolites, and IVDD data were identified from large-scale genome-wide association studies (GWAS) summary data. Then we used Mendelian randomization analysis to investigate the causal relationships between gut microbiota, blood metabolites, and intervertebral disc degeneration, using the inverse variance-weighted method as the primary outcome measure. Subsequently, we conducted sensitivity analyses to ascertain the robustness of the results by testing for heterogeneity and horizontal pleiotropy. In addition, we explored blood metabolites as a mediating factor in the pathway from gut microbiota to IVDD.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>We identified 6 taxa that were strongly associated with the incidence of intervertebral disc herniation. There were 8 positive and 13 negative causal effects between genetic liability in the blood metabolites and IVDD. The mediation analysis revealed that the connections among genus Comamonas B, family Halomonadaceae, family UBA6960, and IVDD were mediated by ADP to glycine ratio, 1,3-dimethylurate levels, 3-hydroxy-2-methylpyridine sulfate levels, and Histidine levels. Each of these accounted for 7.77%, 9.04%, 12.56%, and 11.76%, respectively.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our study provides evidence supporting a potential causal relationship between certain microbial taxa and intervertebral disc degeneration. This study focuses on the mediation of specific blood metabolites, which suggests that they may represent potential targets for intervention.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crosstalk Between Ferroptosis and Cuproptosis in Intervertebral Disc Degeneration: Mechanisms, Therapeutic Targets, and Future Directions","authors":"Zhongpan Li,&nbsp;Liangwei Wang,&nbsp;Xiaojun Wu,&nbsp;Rui Huang,&nbsp;Yi Yuan","doi":"10.1002/jsp2.70080","DOIUrl":"https://doi.org/10.1002/jsp2.70080","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Intervertebral disc degeneration (IVDD) is a prevalent degenerative disease, with low back pain as its primary clinical symptom, imposing significant burdens on individuals and society. With the aging population, IVDD is becoming an inevitable challenge. Current research indicates that the pathogenesis of IVDD is primarily driven by aging, mechanical stress, cell death, and genetics, leading to the loss of nucleus pulposus and degradation of the extracellular matrix within the intervertebral disc.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>This review aims to explore the relationship between the mechanisms of ferroptosis and cuproptosis, two newly discovered modes of cell death, and their potential as therapeutic targets for IVDD.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We conducted a comprehensive review of recent studies on ferroptosis and cuproptosis in IVDD, analyzing the mechanisms of these cell death patterns and their potential role in IVDD progression.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Ferroptosis and cuproptosis have been found to be closely related to IVDD. These cell death modes are implicated in the pathological processes of IVDD, suggesting a potential link between their mechanisms and the disease's progression.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The mechanisms of ferroptosis and cuproptosis are closely related to IVDD, and these pathways may be potential targets for IVDD treatment, providing new directions for clinical treatment of IVDD and future research.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vivo Measurements Reveal Increased Nucleus Pulposus Lactate and Oxygen Concentrations in a Goat Model of Intervertebral Disc Degeneration","authors":"Karthikeyan Rajagopal,&nbsp;Thomas P. Schaer,&nbsp;Kyle D. Meadows,&nbsp;Madeline Boyes,&nbsp;Rachel Hilliard,&nbsp;John C. O'Donnell,&nbsp;George R. Dodge,&nbsp;Dmitriy Petrov,&nbsp;Dawn M. Elliott,&nbsp;Robert L. Mauck,&nbsp;Lachlan J. Smith,&nbsp;Neil R. Malhotra","doi":"10.1002/jsp2.70076","DOIUrl":"https://doi.org/10.1002/jsp2.70076","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Intervertebral disc degeneration is strongly implicated as a cause of low back pain. Although the precise pathophysiological mechanisms remain elusive, perturbations in nutrition that adversely impact the cellular microenvironment of the central nucleus pulposus (NP) may be contributing factors. A comprehensive understanding of this microenvironment, including changes in nutrient availability as a function of degeneration, is critical for the development of effective cell-based treatments. The goal of this study was to adapt brain tissue oxygen probes and microdialysis catheters for in situ determination of relative NP oxygen, glucose, and lactate levels in a preclinical goat model of disc degeneration.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Following ex vivo technical refinement in bovine caudal discs, baseline metabolite measurements were performed in vivo in the lumbar discs of 3 large frame goats. Degeneration was then induced via injection of chondroitinase ABC (ChABC) into the NP, and measurements were repeated after 12 weeks. Degeneration severity was graded using magnetic resonance imaging (MRI) and histology, and vertebral endplate porosity was assessed using microcomputed tomography.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Oxygen and lactate levels in goat NPs were significantly higher in degenerate compared to healthy discs, while glucose levels were not significantly different. ChABC-injected discs exhibited higher vertebral endplate porosity, worse histological and MRI grades, and a spectrum of cartilage endplate damage compared to healthy discs. There were significant positive correlations between MRI grade and both NP oxygen and lactate levels.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>We successfully adapted techniques including surgical placement, equilibration time, flow rate, and detection method for in situ measurement of oxygen, glucose, and lactate in a goat model of disc degeneration. Interestingly, while increased lactate with degeneration was expected, increased oxygen levels were unexpected. Our findings may, in part, be explained by associated alterations in disc and endplate structure, and motivate future studies to comprehensively establish the underlying mechanisms in this model.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70076","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vitro Validation of Pulsed Electromagnetic Field (PEMF) as an Effective Countermeasure Against Inflammatory-Mediated Intervertebral Disc Degeneration","authors":"Laura Guarnaccia,&nbsp;Laura Begani,&nbsp;Silvana Pileggi,&nbsp;Mauro Pluderi,&nbsp;Stefano Borsa,&nbsp;Claudia Fanizzi,&nbsp;Massimiliano Domenico Rizzaro,&nbsp;Giorgio Fiore,&nbsp;Laura Fontana,&nbsp;Rolando Campanella,&nbsp;Chiara Cordiglieri,&nbsp;Chiara Gaudino,&nbsp;Giovanni A. Alotta,&nbsp;Monica Miozzo,&nbsp;Emanuele Garzia,&nbsp;Emanuela Barilla,&nbsp;Lorenzo Fassina,&nbsp;Laura Riboni,&nbsp;Marco Locatelli,&nbsp;Giovanni Marfia,&nbsp;Stefania E. Navone","doi":"10.1002/jsp2.70077","DOIUrl":"https://doi.org/10.1002/jsp2.70077","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Intervertebral disc (IVD) degeneration (IDD) is the main contributor to chronic low back pain (LBP), the leading cause of disability worldwide, with a significant impact on the quality of life and health of common people. The etiology of IDD is still unclear, but it has been largely demonstrated the crucial role of inflammation and neuroinflammation in the pathological and degenerative cascade of events characterizing IVD degeneration.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>In this study, we evaluated the potential therapeutic effect of pulsed electromagnetic field (PEMF) on human degenerated IVD (D-IVD) cells collected from patients who underwent discectomy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials &amp; Methods</h3>\u0000 \u0000 <p>The experimental plan to test our hypothesis, involved viability assay, reactive oxide species/nitrite production, gene, and protein expression. To recapitulate the pro-inflammatory disc microenvironment occurring during IDD, interleukin-1β (IL-1β) was administered to IVD cell culture. Then, to dissect the contribution of neuroinflammatory condition to immune component, microglial cells were co-cultured with IVD-conditioned media, and viability and expression of inflammatory markers were detected.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Our data prove that in the IVD degenerative microenvironment, the increase of pro-inflammatory mediators, extracellular matrix degradative enzymes, and neuroinflammatory markers could be reduced by PEMF therapy, resulting in an overall improvement of degenerative condition and LBP.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>These results represent an impactful novelty for the management of people suffering from LPB, in terms of symptom relief and reduction of social-health system burden.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TNFα Receptor 1 and Not Receptor 2 Affect Annulus Fibrosus and Nucleus Pulposus Response to Cytokine Challenge in a Rat Model","authors":"Timothy D. Jacobsen,&nbsp;S. Olga Yiantsos,&nbsp;Jennifer Gansau,&nbsp;James Meyers,&nbsp;Damien Laudier,&nbsp;James C. Iatridis","doi":"10.1002/jsp2.70070","DOIUrl":"https://doi.org/10.1002/jsp2.70070","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Painful intervertebral disc (IVD) degeneration (IVDD) involves chronic inflammation. Developing translational immunomodulatory strategies for IVDD is a priority with tumor necrosis factor alpha (TNFα) signaling an important target. TNFα binds to 2 receptors (TNFRs), with TNFR1 signaling promoting catabolism and apoptosis and TNFR2 signaling promoting anabolism and proliferation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This study developed translational strategies to evaluate and modulate TNFR1 and TNFR2 signaling in rat in vivo and in vitro IVDD models. We used blocking antibodies, the TNFR2-activator Atsttrin, and small molecule inhibitors of TNFR1 to discern distinct TNFR1 and TNFR2-effects on annulus fibrosus (AF) and nucleus pulposus (NP) cells and to identify effective strategies for modulating specific TNFRs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>TNFR1 was significantly increased with IVDD in vivo in the NP while TNFR2 was unaffected with very faint staining. TNFR1-specific small molecule inhibitors were effective in reducing catabolic effects of TNFα, highlighting the efficacy of this small molecule strategy for TNFR1 signaling modulation. Meanwhile, TNFR1 and TNFR2 inhibition in vitro was not effective with blocking antibodies on NP or AF cells, likely due to species-specificity of available blocking antibodies. Further, TNFR2 activation with Atsttrin was similarly ineffective, likely due to extremely low TNFR2 levels in both AF and NP cells.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>TNFα receptor-specific signaling is important in rat IVDD in vivo and in vitro. TNFR1 inhibition was more effective with small molecules than using blocking antibodies. Low levels of TNFR2 in rat AF and NP cells and lack of efficacy of TNFR2-activator Atsttrin suggest native AF and NP cells have little capacity for TNFR2-dependent IVD repair.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Extracellular Matrix Hydrogel Restores Disc Volume and Alleviates Axial Hypersensitivity in a Rat Model of Disc-Associated Pain","authors":"David J. Lillyman,&nbsp;Evie C. Reddick,&nbsp;Kayla E. Ney,&nbsp;Sydney M. Caparaso,&nbsp;Rebecca A. Wachs","doi":"10.1002/jsp2.70073","DOIUrl":"https://doi.org/10.1002/jsp2.70073","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Chronic low back pain is a global socioeconomic crisis, and the majority of those treated for this condition fail to reach long-term remission. Intervertebral disc degeneration is the predominant associative factor in chronic low back pain. Degenerated discs present with mechanical instability, inflammation, and nerve sprouting. Patients treated with spinal stabilizing procedures often report pain alleviation indicating aberrant spinal mechanics, could be causative in the production of pain.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>With this knowledge, a therapeutic was engineered from decellularized healthy porcine nucleus pulposus tissue mixed with type I collagen and a chemical crosslinker, genipin, to treat mechanical instability and pain.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In vitro, this hydrogel, termed dNP+, was spontaneously fibrillogenic at 37°C and cytocompatible with primary human disc cells and exhibited the capacity to improve the intervertebral disc storage modulus after injury. In vivo, in a rat model of discogenic low back pain, dNP+ proved effective at restoring degenerated disc volume, decreasing axial hypersensitivity, and decreasing spontaneous pain-like behavior when administered 9 weeks after disc degeneration was initiated. However, dNP+ did not alter nerve presence or restore disc morphology when compared to injured discs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Conclusion: Altogether, the data collected in this study concluded that dNP+ was an effective treatment for pain-like behavior in a robust animal model of chronic disc-associated low back pain.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Sex Hormones in Cartilaginous Tissues: A Scoping Review","authors":"Jeffrey L. Hutchinson,&nbsp;Amalie J. Hutchinson,&nbsp;Joy Feng,&nbsp;Cheryle A. Séguin","doi":"10.1002/jsp2.70072","DOIUrl":"https://doi.org/10.1002/jsp2.70072","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>The use of sex hormones in the clinic for the management of musculoskeletal conditions is increasingly common. Despite this, the role of sex hormones in various joint tissues such as the intervertebral disc (IVD), temporomandibular joint (TMJ), and articular cartilage remains poorly understood. Here, we employ a database search strategy to critically examine the available literature in this field through a scoping review.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Using a 4-step protocol, primary research articles pertaining to sex hormones and the IVD, TMJ, or articular cartilage were identified and reviewed by two independent reviewers. ~3900 articles were identified in our initial search, and after review, ~140 were identified to be relevant to our tissues of interest and the effects of sex hormones.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Within all joint tissues investigated here, there were limited investigations on the effects of testosterone. Studies reported here for these tissues indicate that sex hormones are likely beneficial in the context of age-associated joint diseases, but there are important limitations to how this translates to the clinic given that various animal models can display distinct responses to sex hormone exposure. Direct comparisons of sex hormone therapies are limited between biological sexes, but evidence indicates that the molecular responses are likely similar. Current evidence indicates that sex hormone exposure likely has anti-inflammatory effects within joint tissues at the level of gene and protein expression, but the mechanism is unknown.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Sex hormones such as testosterone and estrogen play an important role in inflammatory signaling within joint tissues, which could lead to novel interventions within the clinic for joint degeneration. However, understanding the biological mechanisms of hormones in these distinct tissues, between sexes, and with age is imperative for their proper implementation.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Between Lumbar Multifidus Morphometry and Pain/Disability in Individuals With Chronic Nonspecific Low Back Pain After Considering Demographics, Fear-Avoidance Beliefs, Insomnia, and Spinal Degenerative Changes","authors":"Sabina M. Pinto,&nbsp;Jason P. Y. Cheung,&nbsp;Dino Samartzis,&nbsp;Jaro Karppinen,&nbsp;Yong-Ping Zheng,&nbsp;Marco Y. C. Pang,&nbsp;Maryse Fortin,&nbsp;Arnold Y. L. Wong","doi":"10.1002/jsp2.70071","DOIUrl":"https://doi.org/10.1002/jsp2.70071","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Although individuals with chronic low back pain (CLBP) show increased fatty infiltration in the lumbar multifidus muscle (LMM), it remains unclear whether LMM changes are related to clinical outcomes (such as pain and disability) after considering confounders (spinal phenotypes, fear-avoidance beliefs [FABs] and insomnia). This study examined: (1) differences in confounders and LMM characteristics between individuals with and without CLBP; and (2) associations between confounders, LMM parameters, and clinical outcomes in the CLBP group alone.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Participants (CLBP = 70 and asymptomatic people = 67) underwent lumbar magnetic resonance imaging. Outcome measures comprised the numeric pain rating scale, the Roland–Morris Disability Questionnaire, the Fear-Avoidance Beliefs Questionnaire (FABQ), and the Insomnia Severity Index (ISI) Scale. LMM morphometry at L3-S1 (cross-sectional area, total volume, and fatty infiltration) was measured using a customized MATLAB program. Spinal phenotypes (disc degeneration, high-intensity zones, Modic changes [MCs], Schmorl's nodes, facet joint degeneration [FJD], and facet tropism [FT]) were scored. The between-group differences were analyzed using linear mixed models and chi-squared/Fisher's exact tests. Univariate and multivariate analyses evaluated associations between clinical outcomes and other outcome measures in the CLBP group.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The CLBP group demonstrated more severe disc degeneration and FJD at all levels, and greater FT at L5/S1 than asymptomatic participants (<i>p</i> &lt; 0.05). The average LMM total volume at L3/4 and the percentage of fatty infiltration in LMM in the L3-S1 region were greater in the CLBP group than in asymptomatic counterparts (<i>p</i> &lt; 0.05). The presence of MC at L4 and FJD at L4/5 and L4-S1 was significantly related to pain intensity in the CLBP group. Similarly, FABQ-Work and ISI scores were significantly related to pain intensity (explaining 37% of the variance in pain).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The CLBP group displays more fatty infiltration in the LMM, but their LMM morphometric parameters are unrelated to pain/disability after considering spinal phenotypes, FABs, and insomnia.</p>\u0000 </section>\u0000 </div>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to “Gut Microbiome and Metabolome Changes in Chronic Low Back Pain Patients With Vertebral Bone Marrow Lesions”","authors":"","doi":"10.1002/jsp2.70074","DOIUrl":"https://doi.org/10.1002/jsp2.70074","url":null,"abstract":"<p>W. Li, J. Tu, J. Zheng, et al., Gut Microbiome and Metabolome Changes in Chronic Low Back Pain Patients With Vertebral Bone Marrow Lesions. <i>JOR Spine</i> 8 (2025): e70042, https://doi.org/10.1002/jsp2.70042</p><p>In the article cited above, Affiliations 8 and 9 were mistakenly merged. This has now been corrected, and 16 author affiliations are now shown.</p><p>We apologize for this error.</p>","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intervertebral Lumbar Spine Kinematics in Chronic Low Back Pain Patients Measured Using Biplane Radiography","authors":"William Anderst,&nbsp;C. James Kim,&nbsp;Kevin M. Bell,&nbsp;Tom Gale,&nbsp;Cate Gray,&nbsp;Carol M. Greco,&nbsp;Clarissa LeVasseur,&nbsp;Gina McKernan,&nbsp;Sabreen Megherhi,&nbsp;Charity G. Patterson,&nbsp;Sara R. Piva,&nbsp;Caroline Pellegrini,&nbsp;Michael J. Schneider,&nbsp;Joseph Shoemaker,&nbsp;Patrick Smith,&nbsp;Nam V. Vo,&nbsp;Gwendolyn A. Sowa","doi":"10.1002/jsp2.70069","DOIUrl":"https://doi.org/10.1002/jsp2.70069","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Background&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Chronic low back pain (cLBP) presents as a heterogeneous condition, making diagnosis and treatment challenging. Lumbar spine intervertebral kinematics may provide an objective assessment of patients with cLBP that may be used to inform treatment decisions and evaluate the efficacy of interventions. The purpose of this study was to provide a quantitative description of intervertebral motion in the lumbar spine during flexion/extension (F/E) and lateral bending (LB) in individuals with cLBP.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Methods&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Data from 125 individuals is included in this analysis (M: 53; F: 72; &lt;i&gt;n&lt;/i&gt; = 66 &lt; 60 years of age; average BMI: 25.7 ± 3.6 kg/m&lt;sup&gt;2&lt;/sup&gt;). Dynamic biplane radiography (DBR) and a validated volumetric model-based tracking system were used to assess intervertebral motion at every lumbar level (L1-L2 through L5-S1) during active F/E and LB movements in individuals with cLBP. The outcome measures were the intervertebral translation and rotation range of motion (ROM), the contribution of each motion segment to lumbar motion, the anterior–posterior slip per degree of flexion (SPDF), and trial-to-trial repeatability as assessed by the standard deviation in continuous kinematics waveforms over 3 trials of each movement. Outcomes were calculated for the entire group as well as for the subgroups of men, women, individuals less than 60 years of age, and individuals 60 or more years of age.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Results&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;The mean intervertebral F/E ROM progressively increased from 6.8° ± 3.1° at the L1-L2 through the L4-L5 motion segments, then decreased from 9.7° ± 5.2° at L4-L5 to 8.4° ± 4.9° at L5-S1. However, substantial variability among individuals was observed, and only 7 participants (5.6%) followed this ROM pattern. The mean intervertebral LB ROM increased from 8.8° ± 3.2° at L1-L2 to 9.1° ± 4.2° at L2-L3 and then progressively decreased from the L2-L3 through the L5-S1 motion segments to 2.7° ± 1.8°. However, only 13 participants (10.4%) followed this ROM pattern. On average, the L1-L2, L2-L3, and L5-S1 motion segments were the main contributors to F/E when the torso was near the upright neutral position. L2-L3, L3-L4, and L4-L5 were the main contributors to midrange flexion and extension, and L3-L4, L4-L5, and L5-S1 were the main contributors to lumbar motion when the trunk was near full flexion. L1-L2 and L2-L3 were the main contributors to lumbar LB near the neutral position and through the midrange. The contributions from L4-L5 and L5-S1 peaked at the neutral position and at maximum bending. SPDF was similar in the L1-L2, L2-L3, and L3-L4 motion segmen","PeriodicalId":14876,"journal":{"name":"JOR Spine","volume":"8 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsp2.70069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}