Purpose of the study and background. Patients' beliefs about the origin of their pain and their cognitive processing of pain-related information have both been shown to be associated with poorer prognosis in low back pain (LBP), but the relationship between specific beliefs and specific cognitive processes is not known. The aim of this study was to study the relationship between diagnostic uncertainty and recall bias in two groups of chronic LBP patients, those who were certain about their diagnosis, and those who believed that their pain was due to an undiagnosed problem. Summary of the methods used and the results. Patients (N=68) endorsed and subsequently recalled pain, illness, depression and neutral stimuli. They also provided measures of pain, diagnostic status, mood and disability. Both groups exhibited a recall bias for pain stimuli, but only the group with diagnostic uncertainty additionally displayed a recall bias for illness-related stimuli. This bias remained after controlling for depression and disability. Sensitivity analyses using grouping by diagnosis/explanation received supported these findings. Higher levels of depression and disability were found in the group with diagnostic uncertainty, but levels of pain intensity did not differ between the groups. Conclusion. Although the methodology does not provide information on causality, the results provide evidence for a relationship between diagnostic uncertainty and recall bias for negative health-related stimuli in chronic LBP patients. This abstract has been submitted to a journal, but it has not been published yet. Conflicts of interest: No conflicts of interest. The study was partly funded by the Pain Relief Foundation and British College of Osteopathic Medicine; however they had no involvement in the study design, data collection, data analysis and manuscript preparation

Aims. This systematic review aims to identify 3D predictors derived from biplanar reconstruction, and to describe current methods for improving curve prediction in patients with mild adolescent idiopathic scoliosis. Methods. A comprehensive search was conducted by three independent investigators on MEDLINE, PubMed, Web of Science, and Cochrane Library. Search terms included “adolescent idiopathic scoliosis”,“3D”, and “progression”. The inclusion and exclusion criteria were carefully defined to include clinical studies. Risk of bias was assessed with the Quality in Prognostic Studies tool (QUIPS) and Appraisal tool for Cross-Sectional Studies (AXIS), and level of evidence for each predictor was rated with the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) approach. In all, 915 publications were identified, with 377 articles subjected to full-text screening; overall, 31 articles were included. Results. Torsion index (TI) and apical vertebral rotation (AVR) were identified as accurate predictors of curve progression in early visits. Initial TI > 3.7° and AVR > 5.8° were predictive of curve progression. Thoracic hypokyphosis was inconsistently observed in progressive curves with weak evidence. While sagittal wedging was observed in mild curves, there is insufficient evidence for its correlation with curve progression. In curves with initial Cobb angle < 25°, Cobb angle was a poor predictor for future curve progression. Prediction accuracy was improved by incorporating serial reconstructions in stepwise layers. However, a lack of post-hoc analysis was identified in studies involving geometrical models. Conclusion. For patients with mild curves, TI and AVR were identified as predictors of curve progression, with TI > 3.7° and AVR > 5.8° found to be important thresholds. Cobb angle acts as a poor predictor in mild curves, and more investigations are required to assess thoracic kyphosis and wedging as predictors. Cumulative reconstruction of radiographs improves prediction accuracy. Comprehensive analysis between progressive and non-progressive curves is recommended to extract meaningful thresholds for clinical prognostication. Cite this article: Bone Jt Open 2024;5(3):243–251

Aim. To systematically review the literature and anatomical atlases on LM morphology. Methods. Relevant studies were searched in PubMed (Medline) and Science Direct. Anatomical atlases were retrieved from multiple university libraries and online. Included atlases and studies were assessed at five items: visuals present(y/n), quality of visuals(in-/sufficient), labelling of multifidus (y/n), clear description of region of interest(y/n), description of plane has been described(y/n). This risk of bias assessment tool was developed to assess the quality of description of anatomy, since existing risk of bias tables have only been developed to assess the methodology of studies. Results. In total 69 studies and 19 anatomical atlases were included. Studies. - 52 of 69 studies, LM was described as a superficial muscle at the levels L4 – S1. Others presented the LM as deep intrinsic muscle. - Most used methods: MRI, ultrasound imaging or drawings. - 32 of 69 studies scored a total of five points at the risk of bias assessment, which means low risk of bias. Anatomical atlases. - LM is shown as a deep intrinsic back muscle covered by the erector spinae and fascia thoracolumbalis. - Most anatomical atlases (8/19) had a score of four points at the risk of bias assessment. Conclusion. Anatomy atlases reported different LM morphology compared to anatomical studies. Even between studies, there appears to be inconsistent reporting in LM anatomy. Variation in research methods that are used for measuring LM morphology could influence variation in describing and presenting LM morphology. Standardization of research methodology is recommended in order to compare studies. No conflicts of interest. Sources of Funding: SIA RAAK-Publiek

Background. Clinical guidelines recommend epidural steroid injection (ESI) as a treatment option for severe disc-related sciatica, but there is considerable uncertainty about its effectiveness. Currently, we know very little about factors that might be associated with good or poor outcomes from ESI. The aim of this systematic review was to synthesize and appraise the evidence investigating prognostic factors associated with outcomes following ESI for patients with imaging confirmed disc-related sciatica. Methods. The search strategy involved the electronic databases Medline, Embase, CINAHL Plus, PsycINFO and reference lists of eligible studies. Selected papers were quality appraised independently by two reviewers using the Quality in Prognosis Studies (QUIPS) tool. Between study heterogeneity precluded statistical pooling of results. Results. 2726 citations were identified; 11 studies were eligible. Overall study quality was low with all judged to have moderate or high risk of bias. Forty-five prognostic factors were identified but were measured inconsistently. The most commonly assessed prognostic factors were related to pain and function (n=7 studies), imaging features (n=6 studies), health and lifestyle (n=5 studies), patient demographics (n=4 studies) and clinical assessment findings (n=4 studies). No prognostic factor was found to be consistently associated with outcomes following ESI. Most studies found no association or results that conflicted with other studies. Conclusions. There is little, and low quality, evidence to guide practice in terms of factors that predict outcomes in patients following ESI for disc-related sciatica. The results can help inform some of the decisions about potential prognostic factors that should be assessed in future well-designed prospective cohort studies. Conflicts of interest: No conflicts of interest. Sources of funding: This study is supported by Health Education England and the National Institute for Health Research (HEE/ NIHR ICA Programme Clinical Lectureship, Dr Siobhan Stynes, NIHR300441). The views expressed are those of the author(s) and not necessarily those of the NHS, the National Institute for Health Research or the Department of Health and Social Care

Aims. The aim of this study was to assess the reliability of using MRI scans to calculate the Spinal Instability Neoplastic Score (SINS) in patients with metastatic spinal cord compression (MSCC). Methods. A total of 100 patients were retrospectively included in the study. The SINS score was calculated from each patient’s MRI and CT scans by two consultant musculoskeletal radiologists (reviewers 1 and 2) and one consultant spinal surgeon (reviewer 3). In order to avoid potential bias in the assessment, MRI scans were reviewed first. Bland-Altman analysis was used to identify the limits of agreement between the SINS scores from the MRI and CT scans for the three reviewers. Results. The limit of agreement between the SINS score from the MRI and CT scans for the reviewers was -0.11 for reviewer 1 (95% CI 0.82 to -1.04), -0.12 for reviewer 2 (95% CI 1.24 to -1.48), and -0.37 for reviewer 3 (95% CI 2.35 to -3.09). The use of MRI tended to increase the score when compared with that using the CT scan. No patient having their score calculated from MRI scans would have been classified as stable rather than intermediate or unstable when calculated from CT scans, potentially leading to suboptimal care. Conclusion. We found that MRI scans can be used to calculate the SINS score reliably, compared with the score from CT scans. The main difference between the scores derived from MRI and CT was in defining the type of bony lesion. This could be made easier by knowing the site of the primary tumour when calculating the score, or by using inverted T1-volumetric interpolated breath-hold examination MRI to assess the bone more reliably, similar to using CT. Cite this article: Bone Joint J 2021;103-B(5):971–975

Aims. The aim of this study was to systematically compare the safety and accuracy of robot-assisted (RA) technique with conventional freehand with/without fluoroscopy-assisted (CT) pedicle screw insertion for spine disease. Methods. A systematic search was performed on PubMed, EMBASE, the Cochrane Library, MEDLINE, China National Knowledge Infrastructure (CNKI), and WANFANG for randomized controlled trials (RCTs) that investigated the safety and accuracy of RA compared with conventional freehand with/without fluoroscopy-assisted pedicle screw insertion for spine disease from 2012 to 2019. This meta-analysis used Mantel-Haenszel or inverse variance method with mixed-effects model for heterogeneity, calculating the odds ratio (OR), mean difference (MD), standardized mean difference (SMD), and 95% confidence intervals (CIs). The results of heterogeneity, subgroup analysis, and risk of bias were analyzed. Results. Ten RCTs with 713 patients and 3,331 pedicle screws were included. Compared with CT, the accuracy rate of RA was superior in Grade A with statistical significance and Grade A + B without statistical significance. Compared with CT, the operating time of RA was longer. The difference between RA and CT was statistically significant in radiation dose. Proximal facet joint violation occurred less in RA than in CT. The postoperative Oswestry Disability Index (ODI) of RA was smaller than that of CT, and there were some interesting outcomes in our subgroup analysis. Conclusion. RA technique could be viewed as an accurate and safe pedicle screw implantation method compared to CT. A robotic system equipped with optical intraoperative navigation is superior to CT in accuracy. RA pedicle screw insertion can improve accuracy and maintain stability for some challenging areas. Cite this article: Bone Joint Res 2020;9(10):653–666

Background and aims. The Keele STarT Back approach is effective for stratifying patients with low back pain in primary care, but a similar approach has not been tested with a broader range of patients with musculoskeletal (MSK) pain. We report a feasibility and pilot trial examining the feasibility of a future main trial of a primary care based, risk-stratification (STarT MSK) approach for patients with back, neck, knee, shoulder or multi-site pain. Methods. A pragmatic, two-parallel arm, cluster randomised controlled trial (RCT) in 8 GP practices (4 stratified care involving use of the Keele STarT MSK tool and matched treatment options: 4 usual care). Following screening, adults with one of the five most common MSK pain presentations were invited to take part in data collection over 6 months. Feasibility outcomes included exploration of selection bias, recruitment and follow-up rates, clinician engagement with using the Keele STarT MSK tool and matching patients to treatments. Results. 524 participants (231-stratified care, 293-usual care) were recruited (target n=500) over 7 months (target 3 months), with 15-withdrawals (5-intervention, 10-controls). Minimal selection bias was identified between participants/non-participants, or trial arms. The pain-intensity follow-up rate was 88%. Clinicians used the STarT MSK tool in 41% of relevant consultations (judged as ‘partial success’) and adhered to recommended matched treatments in 69% of cases (judged as ‘success’). Conclusions. A future main RCT is feasible, with some amendments in the wording of the tool and the matched treatment options, to determine the clinical and cost-effectiveness of stratified care versus usual care for patients with MSK pain. Conflicts of interest: ‘No conflicts of interest’. Sources of Funding: This paper presents independent research funded by the National Institute for Health Research (NIHR) under its Programme Grants for Applied Research scheme (grant number: RP-PG-1211-20010). Nadine Foster is a NIHR Senior Investigator and was supported through an NIHR Research Professorship (NIHR-RP-011-015). The views expressed in this publication are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health and Social Care

Purpose and background. Lumbar spinal fusion (LSF) is frequently and increasingly used in lumbar degenerative disorders despite conflicting results and recommendations. Further understanding of patient outcomes after LSF is required to inform decisions regarding surgery and to improve post-surgery management. The objective was to evaluate the course of pain and disability in patients with degenerative disorders of the lumbar spine (spinal stenosis, spondylolisthesis, disc herniation, discogenic low back pain) after first-time LSF. Methods and results. A systematic review and meta-analysis of pain and disability outcomes in prospective cohort studies after first time LSF for degenerative disorders. Two independent researchers searched key databases, determined study eligibility, extracted data and assessed risk of bias (modified Quality in Prognostic Studies tool). A third reviewer mediated at each stage. N weighted pooled estimates were calculated. Twenty-five articles (n=1,777 participants) were included. 17 studies were at unclear risk of bias and 8 at high risk. Back pain (12 studies) decreased modestly and irregularly at follow-up intervals. The n weighted mean VAS back pain decreased from 65.4 (±3.3) pre-surgery to 22.2 (±3.1) at 23 months, but then 45.0 (±not reported; 2 studies at risk of bias) at 42 months. In contrast, leg pain (12 studies) improved substantially short and long-term. Disability (20 studies) improved steadily over time with the exception of the 42-months and 48-months intervals. Conclusion. The overall improvement of leg pain and disability after first-time LSF in degenerative disorders is promising in contrast to back pain outcomes. Further research is needed to analyse outcomes in patients of different diagnostic subgroups. Conflicts of interest. None. Sources of funding. None

Background and Purpose. Non-specific chronic low back pain (NSCLBP) poses a significant disability and economic burden worldwide. Fear avoidance is suggested to contribute to its chronicity and reduced treatment effect. National guidelines recommend exercise as a component of multidisciplinary rehabilitation but its interaction with fear avoidance is ambiguous. This systematic review examined the effect of exercise-based interventions (EBIs) on fear avoidance NSCLBP. Methods and Results. RCTs comparing EBIs to usual care in adults with NSCLBP were included. A systematic search of CINAHL, Medline, EMBASE, Web of Science, Scopus and Cochrane Library (up to January 2019) revealed 10 eligible trials. Following risk of bias assessment, 6 studies were included for data extraction and narrative synthesis. EBIs were not found superior to usual care in reducing fear avoidance at any follow-up. There was evidence that reducing fear avoidance is probably not the mechanism through which EBIs affect pain and disability. In adherent patients, EBIs did not result in greater clinically relevant improvements in pain or disability than usual care, in the short- or intermediate-term. Conclusion. Addition of EBIs as part of multidisciplinary rehabilitation is not more beneficial than that of usual care in reducing fear avoidance in NSCLBP patients. However, the findings of this review are based on heterogenous studies presenting with methodological limitations. Further high-quality research is required to examine the review's findings and investigate current physiotherapy management of fear avoidance in NSCLBP. No conflicts of interest. No funding obtained

Aims. The aim of this study was to evaluate the outcome of spinal instrumentation in haemodialyzed patients with native pyogenic spondylodiscitis. Spinal instrumentation in these patients can be dangerous due to rates of complications and mortality, and biofilm formation on the instrumentation. Patients and Methods. A total of 134 haemodialyzed patients aged more than 50 years who underwent surgical treatment for pyogenic spondylodiscitis were included in the study. Their mean age was 66.4 years (50 to 83); 66 were male (49.3%) and 68 were female (50.7%). They were divided into two groups according to whether spinal instrumentation was used or not. Propensity score matching was used to attenuate the potential selection bias. The outcome of treatment was compared between these two groups. Results. A total of 89 patients (66.4%) underwent non-instrumented surgery and 45 (33.5%) underwent instrumented surgery. There were no significant differences in the rates of postoperative complications, except for an increased rate of wound problems in the instrumented group, which was found in the unmatched cohorts (p = 0.034). There were no significant differences in the rate of recurrent infections (p = 0.328 for the unmatched cohort; p = 0.269 for the matched cohort) and mortality rate, including in-hospital (p = 0.713 for the unmatched cohort; p = 0.738 for the matched cohort) and one-year rates (p = 0.363 for the unmatched cohort; p = 0.787 for the matched cohort), between the groups. However, the interval between the initial diagnosis and the first recurrence was significantly longer in the instrumented group (p = 0.008 for the unmatched cohort; p = 0.032 for the matched cohort). Conclusion. Instrumented surgery for haemodialyzed patients with pyogenic spondylodiscitis showed similar outcomes, including recurrence and mortality, to non-instrumented surgery, despite the instrumented group having more severe neurological deficit, a larger number of involved levels, and increased kyphotic angle

Background. Routine imaging (radiography, CT, MRI) provides no health benefits for low back pain (LBP) patients and is not recommended in clinical practice guidelines. Whether imaging leads to increased costs, healthcare utilization or absence from work is unclear. Purpose. To systematically review if imaging in patients with LBP increases costs, leads to higher health care utilization or increases absence from work. METHODS. Randomized controlled trials (RCTs) and observational studies (OSs), comparing imaging versus no imaging on targeted outcomes were extracted from medical databases until October 2017. Data extraction and risk of bias assessment was performed independently by two reviewers. The quality of the body of evidence was determined using GRADE methodology. Results. Moderate quality evidence (1 RCT; n=421) supports that direct costs increase for patients undergoing radiography. Low quality evidence (3 OSs; n=9535) supports that early MRI leads to a large increase in costs. Moderate quality evidence (2 RCTs, 6 OSs; n=19392) supports that performing MRI, radiography or CT is associated with increased healthcare utilization. Two RCTs (n=667) showed no significant differences between radiography or MRI groups compared with no imaging groups on absence from work. However, the results of two observational studies (n=7765) did show significantly greater absence from work in the imaging groups compared to the no imaging-groups. Conclusions. Imaging in LBP is associated with higher medical costs and increased healthcare utilisation. There are indications that it also leads to higher absence from work. No conflicts of interest. No funding obtained

Purpose of the study and background. A 2011 Cochrane review concluded that spinal manipulative therapy (SMT) is no better than other interventions for reducing pain and improving function in chronic low back pain (CLBP). Using individual participant data (IPD) from trials has advantages, among others: a more precise estimate of the effect and the potential to identify moderators. Our objective was to assess the effect of SMT in adults with CLBP and to identify relevant moderators. Methods. All trials from the 2011 Cochrane review were included in this IPD. We updated the search (April 2016) IPD from eligible studies was requested. Primary outcomes were pain intensity (VAS/NRS) and back-specific function (RMDQ). Risk of bias was assessed. For the treatment effect, an one-stage approach (mixed model technique, intention-to-treat principle) was used; a second-stage approach was conducted as confirmation. For the moderator analyses, one-stage approach was conducted for 19 variables. Results. We obtained IPD from 21 RCTs (n= 4638). Most studies were pragmatic comparing the SMT effect to recommended therapies (e.g. exercise). Effects for SMT were slightly, but not clinically better compared to other therapies for primary outcomes. For the moderator analysis, 8 moderators showed a statistical significant effect at a specific time point (e.g. for SMT vs recommended therapy: age, both pain and function at 26 weeks). But for none of the moderators a consistent effect was identified across time points. Conclusion. Findings of the Cochrane review were confirmed. No clinically-relevant moderators were identified for SMT compared to other therapies for pain and function at any follow-up measure. No conflicts of interest. Sources of funding: European Chiropractic Research fund

Background. The aim of the Groningen Spine Center (GSC) is to provide personalized and effective interventions to patients with spine-related disorders. The GSC comprises a multidisciplinary team to triage and treat patients most optimally. Aim. To investigate the patient reported clinical results of the treatments of the GSC during seven years of its existence. Patients and methods. The basis of this study is a natural cohort of all patients admitted to the GSC. Treatments existed of rehabilitation, surgery, anesthesiology, medication, referral to else, advice and self-management, or any combination of the above. Baseline characteristics, pain (Numeric Rating Scale; NRS), disability (Pain Disability Index; PDI) and quality of life (Euroqol 5-D;EQ5D) were obtained at baseline and discharge. Per calendar year, effects will be presented. Descriptive statistics, effect sizes and t-tests were calculated. Results are compared to the minimal clinically important change (MCIC) of the corresponding scales. Results. In total, 9.897 patients (43% male, mean age 49.2±16.1 yrs) were analyzed on T0, of whom 1.373 filled in a discharge questionnaire. All measures showed statistically significant changes (p<0.01), but for pain and disability mean changes were not always higher than the clinical important change. Effect sizes (d) for pain ranged between 0.44 and 1.01, for disability between 0.40 and 0.80, and for quality of life between 0.41 and 0.76. Conclusion. The Groningen Spine Center provides positive patient reported results over the past 7 years Effect sizes are moderate to high. The results are considered to be clinically important to patients. Non-response and regression to the mean may be sources for bias and should be topic for further research. No conflicts of interest. No funding obtained

Background. Exercise is a complex intervention, and often has more than one treatment target. Results from randomised controlled trials (RCTs) of exercise interventions for chronic low back pain (CLBP) typically show small to moderate effect sizes, but these may differ where outcomes better reflect the targets of interventions. This review aimed to describe what treatment targets, outcome domains and primary outcome measures are used in exercise RCTs, and examined how well the selected outcome domains match the treatment targets used in each RCT. Methods and Results. A computer-aided literature search was performed in eight databases, from inception to August 2018. Inclusion criteria: RCTs in CLBP, exercise compared to a non-exercise arm, sample size >60 per arm. Title and abstract review, subsequent full text review, data extraction and risk of bias assessment were independently undertaken by pairs of reviewers. Of 18251 initially identified titles and abstracts, 23 trials were included in the review. 30 treatment targets were extracted, and 6 primary outcome domains identified. A logic model of the treatment targets and outcomes demonstrated diverse relationships. Only 5 RCTs matched their primary outcome domain to the identified treatment targets, 12 used primary outcomes that did not match the reported treatment targets, and 6 were partially matched. Conclusion. The majority of included trials did not match the primary outcome domain to the treatment targets of the exercise intervention. Further research will explore if better matching between treatment targets and outcomes may change the conclusions of exercise trials in CLBP. No conflicts of interest. Sources of Funding: This PhD is funded by the Research Institute for Primary Care and Health Sciences, Keele University. Prof NE Foster is a UK National Institute for Health Research Senior Investigator, and was supported by a UK National Institute for Health Research Professorship (NIHR-RP-011-015). The views expressed in this publication are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health

Aims

Repeated lumbar spine surgery has been associated with inferior clinical outcomes. This study aimed to examine and quantify the impact of this association in a national clinical register cohort.

Aims

The aim of this study was to determine whether early surgical treatment results in better neurological recovery 12 months after injury than late surgical treatment in patients with acute traumatic spinal cord injury (tSCI).

Background. Recommendations in clinical practice guidelines for non-specific low back pain (NSLBP) are not necessarily translated into practice. Multiple research studies have investigated different strategies to implement best evidence into practice yet no synthesis of these studies is available. Objectives. To systematically review available studies to determine whether implementation efforts in this field have been successful; to identify which strategies have been most successful in changing healthcare practitioner behaviours and patient outcomes. Methods. A systematic review was undertaken, searching electronic databases, hand searching, writing to key authors and using prior knowledge of the field to identify papers. Included papers evaluated a strategy to implement best evidence about management of NSLBP into practice; measured key outcomes regarding change in practitioner behaviour/patient outcomes and subjected their data to statistical analysis. The Cochrane Effective Practice and Organisation of Care (EPOC) recommendations about data extraction and synthesis were followed. Study inclusion, data extraction and study risk of bias assessments were conducted independently. Results. Of 7654 potentially eligible citations, 17 papers reporting on 14 studies were included. Single/one-off implementation efforts were consistently unsuccessful. Increasing the frequency and duration of strategies led to greater success with those continuously ongoing over time the most successful. Risk of bias was highly variable with 7 of 17 papers rated at high risk. Conclusions. One-off implementation strategies may seem attractive but are largely unsuccessful in effecting meaningful change in practice. Increasing frequency and duration of strategies results in greater success and the most successful implementation strategies use consistently sustained interventions

Aims

Surgical approaches to cervical ossification of the posterior longitudinal ligament (OPLL) remain controversial. The purpose of the present study was to analyze and compare the long-term neurological recovery following anterior decompression with fusion (ADF) and posterior laminectomy and fusion with bone graft and internal fixation (PLF) based on > ten-year follow-up outcomes in a single centre.

Aims

People with severe, persistent low back pain (LBP) may be offered lumbar spine fusion surgery if they have had insufficient benefit from recommended non-surgical treatments. However, National Institute for Health and Care Excellence (NICE) 2016 guidelines recommended not offering spinal fusion surgery for adults with LBP, except as part of a randomized clinical trial. This survey aims to describe UK clinicians’ views about the suitability of patients for such a future trial, along with their views regarding equipoise for randomizing patients in a future clinical trial comparing lumbar spine fusion surgery to best conservative care (BCC; the FORENSIC-UK trial).

Aims

The aim of this study was to report the long-term prognosis of patients with multiple Langerhans cell histiocytosis (LCH) involving the spine, and to analyze the risk factors for progression-free survival (PFS).