Injury to the spinal cord and kyphosis are the two most feared complications of tuberculosis of the spine. Since tuberculosis affects principally the vertebral bodies, anterior decompression is usually recommended. Concomitant posterior instrumentation is indicated to neutralise gross instability from panvertebral disease, to protect the anterior bone graft, to prevent graft-related complications after anterior decompression in long-segment disease and to correct a kyphosis. Two-stage surgery is usually performed in these cases. We present 38 consecutive patients with tuberculosis of the spine for whom anterior decompression, posterior instrumentation, with or without correction of the kyphus, and anterior and posterior fusion was performed in a single stage through an anterolateral extrapleural approach. Their mean age was 20.4 years (2.0 to 57.0). The indications for surgery were panvertebral disease, neurological deficit and severe kyphosis. The patients were operated on in the left lateral position using a ‘T’-shaped incision sited at the apex of kyphosis or lesion. Three ribs were removed in 34 patients and two in four and anterior decompression of the spinal cord was carried out. The posterior vertebral column was shortened to correct the kyphus, if necessary, and was stabilised by a Hartshill rectangle and sublaminar wires. Anterior and posterior bone grafting was performed. The mean number of vertebral bodies affected was 3.24 (2.0 to 9.0). The mean pre-operative kyphosis in patients operated on for correction of the kyphus was 49.08° (30° to 72°) and there was a mean correction of 25° (6° to 42°). All except one patient with a neural deficit recovered complete motor and sensory function. The mean intra-operative blood loss was 1175 ml (800 to 2600), and the mean duration of surgery 3.5 hours (2.7 to 5.0). Wound healing was uneventful in 33 of 38 patients. The mean follow-up was 33 months (11 to 74). None of the patients required intensive care. The extrapleural anterolateral approach provides simultaneous exposure of the anterior and posterior aspects of the spine, thereby allowing decompression of the spinal cord, posterior stabilisation and anterior and posterior bone grafting. This approach has much less morbidity than the two-stage approaches which have been previously described

We present a large single surgeon case series evaluation of a new growth guidance technique for the treatment of progressive early onset scoliosis (EOS). A traditional Luque trolley construct uses wires to hold growth guidance rods together. We describe a new technique that uses domino end to side connectors in place of the wires with the aim of providing a stronger construct to better limit curve progression, while allowing longitudinal growth. We did a thorough retrospective review of patient records and radiological imaging. Sequential measurements of Cobb angle and length of rods were recorded, as well as any further surgical procedures and associated complications. This enabled us to quantify the ability of a technique to limit curve progression and simultaneously allow growth of the construct. In total, 28 patients with EOS (20 idiopathic, four syndromic, and four neuromuscular) have been treated with this technique, 25 of whom have a minimum follow-up of 2 years and 13 have a minimum follow-up of 5 years. The average correction of the preoperative Cobb angle was 48.9%. At the 2-year follow up, the average loss of this initial correction was 15 degrees, rising to only 20 degrees at a minimum of 5 years (including four patients with a follow-up of 8 years or more). The growth of the constructs was limited. The average growth at 2 years was 3.7 mm, rising to 19 mm at the 5-year follow-up. Patients who underwent surgery with this technique before the age of 8 years seemed to do better. This group had a revision rate of only 18% at an average time of 7 years after the index procedure, and the average growth was 22 mm. However, the group that had index surgery after the age of 8 years had a 64% revision rate at an average of 3.2 years after surgery and an average growth of only 11.6 mm. Overall, in the cases series, there were four hardware failures (14%) and one deep infection (3.5%), and only ten patients (36%) had one extra surgery after the index procedure. Only two of the 13 patients who are at a follow-up of 5 years or more have had revision. This modified Luque trolley technique has a good capacity for initial curve correction and for limiting further curve progression, with limited longitudinal growth before 2 years and improved growth thereafter. This technique might not be so useful after the age of 8 years because of poor growth and a higher early revision rate. We have also demonstrated a low cost technique with a low hardware failure rate that saves many future surgeries for the patient compared with other techniques used in the treatment of EOS

Aims. The aim of this study is to test the hypothesis that three grades of sagittal compensation for standing posture (normal, compensated, and decompensated) correlate with health-related quality of life measurements (HRQOL). Methods. A total of 50 healthy volunteers (normal), 100 patients with single-level lumbar degenerative spondylolisthesis (LDS), and 70 patients with adult to elderly spinal deformity (deformity) were enrolled. Following collection of demographic data and HRQOL measured by the Scoliosis Research Society-22r (SRS-22r), radiological measurement by the biplanar slot-scanning full body stereoradiography (EOS) system was performed simultaneously with force-plate measurements to obtain whole body sagittal alignment parameters. These parameters included the offset between the centre of the acoustic meatus and the gravity line (CAM-GL), saggital vertical axis (SVA), T1 pelvic angle (TPA), McGregor slope, C2-7 lordosis, thoracic kyphosis (TK), lumbar lordosis (LL), pelvic incidence (PI), PI-LL, sacral slope (SS), pelvic tilt (PT), and knee flexion. Whole spine MRI examination was also performed. Cluster analysis of the SRS-22r scores in the pooled data was performed to classify the subjects into three groups according to the HRQOL, and alignment parameters were then compared among the three cluster groups. Results. On the basis of cluster analysis of the SRS-22r subscores, the pooled subjects were divided into three HRQOL groups as follows: almost normal (mean 4.24 (SD 0.32)), mildly disabled (mean 3.32 (SD 0.24)), and severely disabled (mean 2.31 (SD 0.35)). Except for CAM-GL, all the alignment parameters differed significantly among the cluster groups. The threshold values of key alignment parameters for severe disability were TPA > 30°, C2-7 lordosis > 13°, PI-LL > 30°, PT > 28°, and knee flexion > 8°. Lumbar spinal stenosis was found to be associated with the symptom severity. Conclusion. This study provides evidence that the three grades of sagittal compensation in whole body alignment correlate with HRQOL scores. The compensation grades depend on the clinical diagnosis, whole body sagittal alignment, and lumbar spinal stenosis. The threshold values of key alignment parameters may be an indication for treatment. Cite this article: Bone Joint J 2020;102-B(10):1359–1367

Purpose of the study and background. The biopsychosocial (BPS) model is now widely implemented in clinical practice. Most research on manual therapists' attitudes regarding psychosocial (PS) factors and NSLBP is from the physiotherapy profession. There is currently no literature available to understand how osteopaths integrate those factors with patients presenting with NSLBP. The University College of Osteopathy students being the future of the profession and receiving an accredited BPS teaching warranted the need for an investigation about their attitudes towards PS factors and NSLBP. Methods and results. A qualitative research design with elements of grounded theory was used. Nine final year UCO students were recruited and interviewed at the UCO teaching centre. Data collection and analysis occurred simultaneously through the constant comparative method of analysis. Three main themes emerged from the data analysis: 1) Definition and interpretation of PS factors towards LBP; 2) Assessment and management of PS factors; 3) Competence and difficulties towards PS factors. Conclusion. The level of understanding was homogeneous amongst the participants on the understanding of PS factors and their role in a NSLBP presentation. They assessed for PS factors throughout the case history and tend to rely on their instincts. Two types of strategies towards the PS factors management were identified. However, lack of clinical experience and lack of training on the management of PS factors were identified as the main barriers encountered by students when treating patient with NSLBP. No conflict of interest. No funding

Seven men with a mean age of 63.9 years (59 to 67) developed dysphagia because of oesophageal compression with ossification of the anterior longitudinal ligament (OALL) and radiculomyelopathy due to associated stenosis of the cervical spine. The diagnosis of OALL was made by plain lateral radiography and classified into three types; segmental, continuous and mixed. Five patients had associated OALL in the thoracic and lumbar spine without ossification of the ligamentum flavum. All underwent removal of the OALL and six had simultaneous decompression by removal of ossification of the posterior longitudinal ligament or a bony spur. All had improvement of their dysphagia. Because symptomatic OALL may be associated with spinal stenosis, precise neurological examination is critical. A simultaneous microsurgical operation for patients with OALL and spinal stenosis gives good results without serious complications

Purpose of study and background. IVD degeneration is a major cause of Low back pain. We have previously reported an injectable hydrogel (NPgel), which induces differentiation of human MSCs to disc cells and integrates with NP tissue following injection in vitro. However, the translation of this potential treatment strategy into clinic is dependent on survival and differentiation of MSCs into disc cells within the degenerate IVD. Here, we investigated the viability and differentiation of hMSCs incorporated into NPgel cultured under conditions mimicking the healthy and degenerate microenvironment of the disc. Methods and Results. MSCs were cultured in NP gel under 5% O. 2. in either: standard culture (DMEM, pH7.4); healthy disc (DMEM, pH7.1); degenerate disc (low glucose DMEM, pH6) or degenerate disc plus IL-1β. Following 4 weeks histological staining and immunohistochemical analysis investigated viability, ECM synthesis and matrix degrading enzyme expression. Here we have shown that viability and NP cell differentiation of MSCs incorporated within NPgel was mostly unaffected by treatment with conditions such as low glucose, low pH and the presence of cytokines, all regarded as key contributors to disc degeneration. In addition, the NPgel was shown to prevent MSCs from displaying a catabolic phenotype with low expression of degradative enzymes, highlighting the potential of NPgel to differentiate hMSCs and protect them from the degenerate disc microenvironment. Conclusion. The NPgel described here not only has the potential to provide mechanical support and deliver MSCs for regeneration of the IVD but also may simultaneously function to protect delivered hMSCs from the catabolic environment in the degenerate IVD. C Le Maitre and C Sammon hold a patent for the hydrogel described. Funded by MRC and Versus Arthritis

Aims

CRP is an acute-phase protein that is used as a biomarker to follow severity and progression in infectious and inflammatory diseases. Its pathophysiological mechanisms of action are still poorly defined. CRP in its pentameric form exhibits weak anti-inflammatory activity. The monomeric isoform (mCRP) exerts potent proinflammatory properties in chondrocytes, endothelial cells, and leucocytes. No data exist regarding mCRP effects in human intervertebral disc (IVD) cells. This work aimed to verify the pathophysiological relevance of mCRP in the aetiology and/or progression of IVD degeneration.

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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).

Introduction. Chronic low back pain (LBP) is globally recognised as a leading cause of disability, with a global point-prevalence of 540 million people experiencing ‘activity-limiting’ LBP. A lack of muscle endurance is common in people with LBP, however the mechanisms underlying reduced endurance remain unclear. This study utilised high-density EMG (HDEMG) to evaluate differences in the spatial distribution and redistribution of lumbar erector spinae (ES) activity during an endurance task. Methods. Thirteen control (Age:26.46±5.0, 7 Males) and 13 LBP participants (Age:27.39±9.7, 6 Males) were recruited and HDEMG signals were detected from ES unilaterally using a 13×5 electrode grid adhered 2cm lateral to the L5 spinous process. Participants were asked to complete an isometric endurance task until failure (>10° trunk deviation) with muscle activity simultaneously recorded. The activity was computed to form a map of the EMG amplitude distribution and the position of the centre of activity (centroid) was monitored throughout the task. Results. The LBP group showed significantly lower endurance than controls (LBP:186.2±72.3s, control:283.0±33.0s). The EMG map showed a less diffuse contraction of ES in LBP participants, with greater activation in cranial portions. In the LBP group, throughout the task the centroid was 12mm more cranial, and less redistribution of activity was seen (LBP:1.40±0.29mm, control:2.10±0.45mm). Conclusions. LBP participants utilised a different motor strategy to complete the task, characterised by more cranial activation of ES and less redistribution of activity. These findings provide new insight into the mechanisms underlying impaired endurance in people with LBP and may lead to the development of new exercise approaches. Conflicts of interest: No conflicts of interest. Sources of funding: No funding obtained

Purpose and Background. Physical mechanisms underlying back pain impairment are poorly understood. Measuring movement features linked to back pain should help understand its causes and decide on best management. Previous kinematic studies have pointed to diverse features distinguishing back pain sufferers. However, the complexity of 3D kinematics means that it is difficult to choose, a priori, which variables or variable combinations are most important. This study set out to obtain a rich set of kinematic data from spinal regions and lower extremities during typical movement tasks, and analyse all of these variables simultaneously to obtain globally important distinguishing features. To this end, a novel distance metric between pairs of motion sequences was used to construct distance matrices. Analyses were carried out directly on these distance matrices. Methods and Results. 20 controls (age: 28 ± 7.6, 10 female) and 20 chronic LBP subjects (age: 41 ± 10.7, 4 female) were recruited. Kinematic data were obtained whilst subjects stood from sitting (‘STS’), picking up (‘Picking’) and lowering (‘Lowering’) a 5kg box, and walking (right (‘WalkRight’) and left sides (‘WalkLeft’)). For each task, permutation tests for group differences were carried out, based on the pseudo-F statistic calculated from the distance matrices. A similar approach was used to identify local differences at time points and joints. Group mean motion sequences were compared using a custom OpenSim model. Significant differences were obtained for STS (pseudo-F=2.8, p=0.017), WalkRight (pseudo-F=3.27, p=0.008) and WalkLeft (pseudo-F=3.39, p=0.005). Conclusion. Comparisons of movement tasks between groups revealed significant differences for STS and walking. Visualisation of group mean motion sequences, and local analyses assisted in the detailed understanding of these differences. This provides a visually intuitive means of studying complex motion differences between groups, without prior assumptions regarding which variables are important. No conflicts of interest. No funding. Original study funded by Arthritis Research UK MRC (Medical Research Council) Centre for Musculoskeletal Health and Work

Aims

The aim of the study was to determine if there was a direct correlation between the pain and disability experienced by patients and size of their disc prolapse, measured by the disc’s cross-sectional area on T2 axial MRI scans.

Purpose and background. Pain related distress is associated with poor low back pain outcomes, and is challenging for practitioners to address. This study investigated osteopaths' beliefs about the relationship between chronic pain (CP) and distress (D). The research aimed to explore how patient's distress is understood and managed by osteopath educator clinicians with an interest in the field. Methods and results. A qualitative research design using a constructivist grounded theory analytical approach was used to analyse semi-structured interviews. A purposive sample of seven osteopaths working at the British School of Osteopathy (BSO) with experience with CP-D was recruited. Data collection and analysis were carried out simultaneously. Audio-recording, verbatim-transcriptions, memos-writing and diary-keeping were used to develop themes and theory. Three main themes were identified: osteopaths understanding of the CP-D presentation, evaluation and assessment of the CP-D patient, the role of the osteopath and therapist-patient interaction in CP-D treatment. Three sub-themes were developed for each theme. Conclusions. Osteopaths recognized the relationship between CP-D. They considered the management of this presentation complex and challenging due to extensive clinical uncertainty. Osteopaths considered the therapist-patient interaction as a crucial vehicle for evaluating the individual patient presentation along with understanding patient's biopsychosocial factors and readiness to change, however a lack of rigor was identified with this process. Challenges related to evaluation were mainly related to patient characteristics and osteopath's lack of training. Further work is required to develop better evaluation and intervention strategies as well as understanding patient's attitudes to the relationship between CP and D. Conflict of interest: None. Sources of funding: None

Aims

Vertebral body tethering (VBT) is a non-fusion technique to correct scoliosis. It allows correction of scoliosis through growth modulation (GM) by tethering the convex side to allow concave unrestricted growth similar to the hemiepiphysiodesis concept. The other modality is anterior scoliosis correction (ASC) where the tether is able to perform most of the correction immediately where limited growth is expected.

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The aims of this study were to determine the diagnostic yield of image-guided biopsy in providing a final diagnosis in patients with suspected infectious spondylodiscitis, to report the diagnostic accuracy of various microbiological tests and histological examinations in these patients, and to report the epidemiology of infectious spondylodiscitis from a country where tuberculosis (TB) is endemic, including the incidence of drug-resistant TB.

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To describe the clinical, radiological, and functional outcomes in patients with isolated congenital thoracolumbar kyphosis who were treated with three-column osteotomy by posterior-only approach.

Aims

Spinal deformity surgery carries the risk of neurological injury. Neurophysiological monitoring allows early identification of intraoperative cord injury which enables early intervention resulting in a better prognosis. Although multimodal monitoring is the ideal, resource constraints make surgeon-directed intraoperative transcranial motor evoked potential (TcMEP) monitoring a useful compromise. Our experience using surgeon-directed TcMEP is presented in terms of viability, safety, and efficacy.

Objective:. The aim of this study was to define a method to identify the location of the great vessel bifurcation (GVB) in relation to the L5/S1 disc and measure the lumbo-sacral angle (LSA) at L5/S1 using routine lumbar spine MRI images on standard PACS software. The information can be used for surgical planning of anterior lumbar interbody fusion (ALIF) at L5/S1 with a plate and cage. Method:. Axial and sagittal T2 sections of 192 lumbar spine MRI scans were viewed simultaneously to classify the position of the GVB and the LSA. A further 75 scans were assessed independently by 2 examiners (E1/E2) utilizing the same classification to record the GVB position (High (H), Middle (M), Low (L)) and size of the LSA using standard radiology software. Twenty five images were randomly selected for repeat measurements one month later. Results:. Inter and Intra-observer agreements were excellent for LSA (0.92, R1=0.92, R2=0.94) and moderate for GVB (0.76, R1=0.85, R2=0.75). Reduced GVB correlation was primarily observed in the high (E1=64% vs E2=50.7%, =57.3%) and Middle (E1=25.3% vs E2=40%, =32.7%) categories. LSA was most prevalent between 121–130° in both assessors (E1= 57.3% vs E20=61.3%, =59.5%). Conclusion:. MRI assessment of GVB height and LSA is feasible and can aid surgical planning of L5/S1 ALIF and permit selection of the implants that best suit the patient's specific anatomy. The results indicate that anterior plate placement, without impingement on the great vessels, would be possible in 90% of cases with a majority having an LSA of between 125° and 130°

We retrospectively examined the prevalence and natural history of asymptomatic lumbar canal stenosis in patients treated surgically for cervical compressive myelopathy in order to assess the influence of latent lumbar canal stenosis on the recovery after surgery. Of 214 patients who had undergone cervical laminoplasty for cervical myelopathy, we identified 69 (32%) with myelographically documented lumbar canal stenosis. Of these, 28 (13%) patients with symptomatic lumbar canal stenosis underwent simultaneous cervical and lumbar decompression. Of the remaining 41 (19%) patients with asymptomatic lumbar canal stenosis who underwent only cervical surgery, 39 were followed up for ≥ 1 year (mean 4.9 years (1 to 12)) and were included in the analysis (study group). Patients without myelographic evidence of lumbar canal stenosis, who had been followed up for ≥ 1 year after the cervical surgery, served as controls (135 patients; mean follow-up period 6.5 years (1 to 17)). Among the 39 patients with asymptomatic lumbar canal stenosis, seven had lumbar-related leg symptoms after the cervical surgery. Kaplan–Meier analysis showed that 89.6% (95% confidence interval (CI) 75.3 to 96.0) and 76.7% (95% CI 53.7 to 90.3) of the patients with asymptomatic lumbar canal stenosis were free from leg symptoms for three and five years, respectively. There were no significant differences between the study and control groups in the recovery rate measured by the Japanese Orthopaedic Association score or improvement in the Nurick score at one year after surgery or at the final follow-up. These results suggest that latent lumbar canal stenosis does not influence recovery following surgery for cervical myelopathy; moreover, prophylactic lumbar decompression does not appear to be warranted as a routine procedure for coexistent asymptomatic lumbar canal stenosis in patients with cervical myelopathy, when planning cervical surgery

MRI scanning of spinal patients at the Primary Care Triage stage is pivotal in reducing inappropriate referrals into Secondary Care. A retrospective study was undertaken. Details of patients from spinal triage clinics referred for MRI scan were collated together with a provisional diagnosis. Following imaging the results and management plan were documented. 2191 Patients referred via GP's to Physiotherapy Specialist- lead spinal triage clinics from April to September 2009 inclusive. Referred to a spinal consultant routine/urgent, Managed conservatively, Failed to attend for MRI scanning or MRI cancelled, Sent for scanning for reassurance and discharged. Of 2191 patients seen in a 6-month period 194 (9%) were referred for MRI of which 81 (41%) were referred on to spinal consultant. This equates to 3.7% of the total number of patients triaged. Specialist physiotherapy diagnosticians with access to MRI scanning, allows simultaneous treatment and seamless transfer to spinal consultants for surgical intervention if appropriate. 1. This process is used effectively to manage large numbers of spinal referrals and minimises the number of patients seen unnecessarily in secondary care. 1. This is only possible with close multidisciplinary team working. 2.

Study Design. Single surgeon prospective cohort with radiological follow-up. Background. Anjarwalla et al. have shown that the addition of posterior pedicle supplementation without posterolateral fusion during an ALIF procedure significantly increases the rate of interbody fusion when using a carbon fibre / PEEK cage packed with autogenous iliac crest graft. Stand alone ALIF cages which utilise screws passing through the interbody cage and into the vertebral bodies were designed to obviate the need for a posterior procedure by increasing the anterior construct stability and fusion rate. Objective. To assess the effect of posterior pedicle screw supplementation without posterolateral fusion on the fusion rate of ALIF when using anterior cage and screw constructs. Method. Between 2003 and 2008 91 patients underwent ALIF procedure under a single surgeon for low back pain associated with degenerative disc disease or lytic spondylolisthesis. Routine CT was performed at around 1 to 2 years follow up to ensure union prior to discharge. It was noted that there was a significant number of locked pseudathroses, especially in 2 level cases, and in 2006 the surgeon started to perform simultaneous supplementary posterior pedicle screw stabilisation without posterolateral fusion in the majority of cases. Results. Of the 91 patients, 77 (85%) had CT follow up at mean 21 months. 45 patients had anterior surgery alone (26 single level and 19 two level) and 32 had front back surgery (15 single level and 17 two level). Pseudarthrosis was seen in 16 patients (36%) of the anterior alone group and 2 (6%) of the front back group. In the anterior alone group, pseudarthosis occurred in 6 / 26 (23%) patients with single level surgery and 10 /19 (53%) of those with two level surgery. In this last group, the pseudarthosis occurred in the upper fusion level in five patients and at both fusion levels in other five. Conclusion. Posterior pedicle screw supplementation without posterolateral fusion improves the fusion rate of ALIF when using anterior cage and screw constructs. We would recommend supplementary posterior fixation especially in cases where more than one level is being operated