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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_X | Pages 75 - 75
1 Apr 2012
Taiwo F Germon T
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We have examined how many and which potential complications (PCs) are recorded on the consent form by a group of consultant surgeons performing common spinal procedures - anterior cervical discectomy and fusion (ACDF) and posterior lumbar discectomy and/or medial facetectomy (PLD). Email survey. Consultant spinal surgeons performing ACDF and/or PLD practicing in Southwest England. Identification of the PCs each surgeon listed on the consent form for the specified procedures. There were 23 responses from 28 Consultant surgeons approached. 21 surgeons performed both ACDF and PLD, 2 performed only PLD. Surgeons quoted 5 to 17 (mode 10) PCs for ACDF and 4 to 15 (mode 13) for PLD. These did not necessarily represent the most common or most dangerous PCs recorded in the literature. 1,2. Small difference in PCs mentioned by Neurosurgeons and Orthopaedic surgeons was seen (ACDF mode: 12vs10, PLD mode: 12vs13). There was a strong correlation between the number of PCs recorded by surgeons for ACDF and PLD. We have found a wide variation in consenting practice amongst a group of surgeons performing common spinal operations. Issues of consent are common causes of formal complaints and potential litigation, causing anxiety for both patient and surgeon. A more homogenous consent process, employing objective measures where possible, may help reduce this burden and may be achieved by setting a national standard


The Bone & Joint Journal
Vol. 105-B, Issue 3 | Pages 315 - 322
1 Mar 2023
Geere JH Swamy GN Hunter PR Geere JL Lutchman LN Cook AJ Rai AS

Aims. To identify the incidence and risk factors for five-year same-site recurrent disc herniation (sRDH) after primary single-level lumbar discectomy. Secondary outcome was the incidence and risk factors for five-year sRDH reoperation. Methods. A retrospective study was conducted using prospectively collected data and patient-reported outcome measures, including the Oswestry Disability Index (ODI), between 2008 and 2019. Postoperative sRDH was identified from clinical notes and the centre’s MRI database, with all imaging providers in the region checked for missing events. The Kaplan-Meier method was used to calculate five-year sRDH incidence. Cox proportional hazards model was used to identify independent variables predictive of sRDH, with any variable not significant at the p < 0.1 level removed. Hazard ratios (HRs) were calculated with 95% confidence intervals (CIs). Results. Complete baseline data capture was available for 733 of 754 (97.2%) consecutive patients. Median follow-up time for censored patients was 2.2 years (interquartile range (IQR) 1.0 to 5.0). sRDH occurred in 63 patients at a median 0.8 years (IQR 0.5 to 1.7) after surgery. The five-year Kaplan-Meier estimate for sRDH was 12.1% (95% CI 9.5 to 15.4), sRDH reoperation was 7.5% (95% CI 5.5 to 10.2), and any-procedure reoperation was 14.1% (95% CI 11.1 to 17.5). Current smoker (HR 2.12 (95% CI 1.26 to 3.56)) and higher preoperative ODI (HR 1.02 (95% CI 1.00 to 1.03)) were independent risk factors associated with sRDH. Current smoker (HR 2.15 (95% CI 1.12 to 4.09)) was an independent risk factor for sRDH reoperation. Conclusion. This is one of the largest series to date which has identified current smoker and higher preoperative disability as independent risk factors for sRDH. Current smoker was an independent risk factor for sRDH reoperation. These findings are important for spinal surgeons and rehabilitation specialists in risk assessment, consenting patients, and perioperative management. Cite this article: Bone Joint J 2023;105-B(3):315–322


Bone & Joint Open
Vol. 2, Issue 3 | Pages 198 - 201
1 Mar 2021
Habeebullah A Rajgor HD Gardner A Jones M

Aims. The British Spine Registry (BSR) was introduced in May 2012 to be used as a web-based database for spinal surgeries carried out across the UK. Use of this database has been encouraged but not compulsory, which has led to a variable level of engagement in the UK. In 2019 NHS England and NHS Improvement introduced a new Best Practice Tariff (BPT) to encourage input of spinal surgical data on the BSR. The aim of our study was to assess the impact of the spinal BPT on compliance with the recording of surgical data on the BSR. Methods. A retrospective review of data was performed at a tertiary spinal centre between 2018 to 2020. Data were collated from electronic patient records, theatre operating lists, and trust-specific BSR data. Information from the BSR included operative procedures (mandatory), patient consent, email addresses, and demographic details. We also identified Healthcare Resource Groups (HRGs) which qualified for BPT. Results. A total of 3,587 patients were included in our study. Of these, 1,684 patients were eligible for BPT. Between 2018 and 2019 269/974 (28%) records were complete on the BSR for those that would be eligible for BPT. Following introduction of BPT in 2019, 671/710 (95%) records were complete having filled in the mandatory data (p < 0.001). Patient consent to data collection also improved from 62% to 93%. Email details were present in 43% of patients compared with 68% following BPT introduction. Conclusion. Our study found that following the introduction of a BPT, there was a statistically significant improvement in BSR record completion compliance in our unit. The BPT offers a financial incentive which can help generate further income for trusts. National data input into the BSR is important to assess patient outcome following spinal surgery. The BSR can also aid future research in spinal surgery. Cite this article: Bone Jt Open 2021;2-3:198–201


Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_9 | Pages 37 - 37
1 Oct 2022
Trickett H Billington J Wellington K Khatri M
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Purpose of study and background. Spinal surgery is a high-risk surgical speciality, a patient's understanding of surgical interventions, alternative treatment options, and the benefits and risks must be ascertained to gain informed consent. This pilot study aims to evaluate if the provision of a digital recording of a patient's consultation enhances patient satisfaction, improves recall of clinical diagnosis, recall of treatment options and the risks and benefits of Spinal Surgery. Methodology and results. A coalition team was identified. A safe and secure process for recording and storage identified. Both qualitative and quantitative data was collected via questionnaires. 62 patients were invited to participate in the pilot, 12 declined. Data was collected immediately post consultation, and two weeks following the consultation via telephone. Comparison was made of the relative increase or decrease in patient recall of the clinical diagnosis, treatment options, and the benefits and the risks of spinal surgery. Patient satisfaction was measured pre- and post- consultation. 50 patients (81%) participated. 32 participants (52%) responded to follow up questionnaire at 2 weeks. Recall of risk for surgical intervention increased by 37%, and of benefit by 36%. Patient satisfaction was rated excellent or very satisfied in 93% at initial consultation and at 2 week follow up all participant's rated satisfaction as excellent or very satisfied. Conclusion. This pilot study was small. COVID delayed further recruitment. Initial outcomes demonstrated high levels of patient satisfaction and appear to demonstrate improved recall. Significant technological issues were identified. Further collaborative work needs to be undertaken. Conflicts of interest: No conflicts of interest. Sources of funding: No funding obtained


Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_9 | Pages 28 - 28
1 Oct 2022
Newton C Singh G O'Neill S Diver C Booth V Logan P O'Sullivan K O'Sullivan P
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Purposes of the study and background. Cognitive Functional Therapy (CFT) is a complex intervention that targets the biopsychosocial nature of low back pain (LBP). The barriers and facilitators to CFT have not previously been researched in the United Kingdom National Health Service (NHS). This study aimed to explore the barriers and facilitators of CFT in the NHS ahead of a future clinical trial. Methods and results. Participants who had completed a CFT intervention for persistent LBP and physiotherapists who had previously attended a CFT training workshop were recruited. Data were collected using one to one semi-structured interviews and were analysed thematically using framework method. Eight people with LBP and ten physiotherapists consented to participate. The key findings were that UK NHS physiotherapists can be trained to deliver CFT, they valued the training and felt confident to deliver CFT successfully to patients in NHS physiotherapy departments. Peer support and mentorship from a CFT practitioner was necessary for the physiotherapists to sustain changes to their clinical practice. Participants with LBP welcomed CFT as they felt it was beneficial and enabled them to self-manage their LBP and they could recognise the difference between CFT and usual care. The barriers, mainly related to the healthcare system, included short appointment times and poor availability of follow-up appointments. Conclusion. This is the first study to establish the barriers and facilitators to the implementation of CFT in the NHS. The findings of this study were used to inform the planning, design and delivery of a feasibility randomised controlled trial. Conflicts of interest: No conflicts of interest. Sources of funding: No funding obtained


The Bone & Joint Journal
Vol. 103-B, Issue 9 | Pages 1464 - 1471
1 Sep 2021
Barker TP Steele N Swamy G Cook A Rai A Crawford R Lutchman L

Aims. Cauda equina syndrome (CES) can be associated with chronic severe lower back pain and long-term autonomic dysfunction. This study assesses the recently defined core outcome set for CES in a cohort of patients using validated questionnaires. Methods. Between January 2005 and December 2019, 82 patients underwent surgical decompression for acute CES secondary to massive lumbar disc prolapse at our hospital. After review of their records, patients were included if they presented with the clinical and radiological features of CES, then classified as CES incomplete (CESI) or with painless urinary retention (CESR) in accordance with guidelines published by the British Association of Spinal Surgeons. Patients provided written consent and completed a series of questionnaires. Results. In total, 61 of 82 patients returned a completed survey. Their mean age at presentation was 43 years (20 to 77; SD 12.7), and the mean duration of follow-up 58.2 months (11 to 182; SD 45.3). Autonomic dysfunction was frequent: 33% of patients reported bladder dysfunction, and 10% required a urinary catheter. There was a 38% and 53% incidence of bowel and sexual dysfunction, respectively: 47% of patients reported genital numbness. A total of 67% reported significant back pain: 44% required further investigation and 10% further intervention for the management of lower back pain. Quality of life was lower than expected when corrected for age and sex. Half the patients reported moderate or worse depression, and 40% of patients of working age could no longer work due to problems attributable to CES. Urinary and faecal incontinence, catheter use, sexual dysfunction, and genital numbness were significantly more common in patients with CESR. Conclusion. This study reports the long-term outcome of patients with CES and is the first to use validated patient-reported outcome measures to assess the CES Core Outcome Set. Persistent severe back pain and on-going autonomic dysfunction were frequently reported at a mean follow-up of five years. Cite this article: Bone Joint J 2021;103-B(9):1464–1471


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_X | Pages 97 - 97
1 Apr 2012
Mukhopadhyay S Batra S Ahuja S
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In major procedures like scoliosis surgery, parents are often asked to sign the consent on behalf of children because of the pretext that minor may have limited understanding and judgement about the procedure. Scoliosis surgery for patients with AIS is mainly indicated for cosmetic or psychological reasons. We audited our practice in the department to collect information on the current consent practices involving the minor patients undergoing scoliosis surgery. We also have conducted a questionnaire survey of the various spinal units in UK to assess their practice in this regard. Forty-two consent forms (28 patients; multiple procedures in some patients) and case notes of patients between 12 and 16 years undergoing scoliosis surgery were reviewed. We have contacted 12 spinal deformity correction units and 11 spinal trauma units across UK over telephone to assess the current consenting practice as well. 9.5% (n=4) patients signed there own consent forms. Except in one case explanation of risks were documented in detail. Except two units (18%) offering the minor patient to sign their consent, parents are usually asked to sign consent on their behalf in majority (10/12) units. Seven out of the twelve spinal units use standard NHS or department of health consent forms. Few units have their own consent form with some alterations or additions. There is no specific age when a child becomes competent to consent to treatment: It depends both on the child and on the seriousness and complexity of the treatment being proposed. However, it is still good practice to encourage competent children to more involved along with their families in decision-making


Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_11 | Pages 7 - 7
1 Sep 2021
Gill S Papworth M Fragkakis E Marrocco A Lui D Bishop T
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A previously fit and well 58 year old male suffered from a bilateral psoas haematoma (PH) following 52 days of veno-venous extracorporeal membranous oxygenation (VV-ECMO) for severe Coronavirus disease (COVID-19), refractory to all non-invasive and medical therapies. He developed multiple complications, including inability to walk or weight-bear, due to lumbar plexopathy triggered by bilateral PH compression, compounded by COVID-19-related mononeuritis multiplex. The patient was referred to our institution with a known diagnosis of bilateral PH and after spinal multidisciplinary team (MDT) input, was deemed not for surgical or interventional radiology treatments. The patient received extensive neurorehabilitation, coordinated by multiple MDTs. Although PH has been correlated to COVID-19, to the best of our knowledge this is the first reported case of such a complex presentation resulting in a dramatic bilateral PH. Health records from 3 large UK teaching hospitals were collected regarding treatment and follow up appointments, following patient's written informed consent. Patient's comorbidities, duration in hospital units, MDT inputs, health assessments, mobilisation progress and neurologic assessments, were all recorded. Data was collected retrospectively then prospectively due to lengthy in-patient stay. The literature review was conducted via PubMed and open access sources, selecting all the relevant studies and the ECMO guidelines. Patient received treatment from 3 different units in 3 hospitals over 212 days including 103 days in neurorehabilitation. Involvement of physiotherapy, dietitians, speech and language teams, neurologist, neurophysiotherapists, occupational therapists was required. The patient progressed from a bed-bound coma and inability to walk, to standing with lower limb backslab at discharge. Additionally, he was referred for elective exploratory surgery of the psoas region for scar debridement and potential nerve graft repair of the lumbosacral plexus. The surgery outcome is cautiously optimistic, with some improvement in nerve conduction studies, however is currently unknown regarding recovery progress and return to premorbid functional baseline. The novelty of this presentation yields significant learning points regarding early recognition of PH, requirements for vast MDT input and specialist use of VV-ECMO in severe COVID-19 patients. It also highlights the broad pathophysiology of SARS-CoV-2 causing neuropathy and coagulopathy; understanding this will optimise robust anticoagulation guidelines, required in VV-ECMO


Bone & Joint Open
Vol. 4, Issue 11 | Pages 873 - 880
17 Nov 2023
Swaby L Perry DC Walker K Hind D Mills A Jayasuriya R Totton N Desoysa L Chatters R Young B Sherratt F Latimer N Keetharuth A Kenison L Walters S Gardner A Ahuja S Campbell L Greenwood S Cole A

Aims

Scoliosis is a lateral curvature of the spine with associated rotation, often causing distress due to appearance. For some curves, there is good evidence to support the use of a spinal brace, worn for 20 to 24 hours a day to minimize the curve, making it as straight as possible during growth, preventing progression. Compliance can be poor due to appearance and comfort. A night-time brace, worn for eight to 12 hours, can achieve higher levels of curve correction while patients are supine, and could be preferable for patients, but evidence of efficacy is limited. This is the protocol for a randomized controlled trial of ‘full-time bracing’ versus ‘night-time bracing’ in adolescent idiopathic scoliosis (AIS).

Methods

UK paediatric spine clinics will recruit 780 participants aged ten to 15 years-old with AIS, Risser stage 0, 1, or 2, and curve size (Cobb angle) 20° to 40° with apex at or below T7. Patients are randomly allocated 1:1, to either full-time or night-time bracing. A qualitative sub-study will explore communication and experiences of families in terms of bracing and research. Patient and Public Involvement & Engagement informed study design and will assist with aspects of trial delivery and dissemination.


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_10 | Pages 17 - 17
1 Oct 2019
Snuggs J Thorpe A Partridge S Chiverton N Cole A Michael A Sammon C Le Maitre C
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Purpose of study and background. We have previously reported the development of injectable hydrogels for potential disc regeneration (NPgel) or bone formation which could be utilized in spinal fusion (Bgel). As there are multiple sources of mesenchymal stem cells (MSCs), this study investigated the incorporation of patient matched hMSCs derived from adipose tissue (AD) and bone marrow (BM) to determine their ability to differentiate within both hydrogel systems under different culture conditions. Methods and Results. Human fat pad and bone marrow derived MSCs were isolated from femoral heads of patients undergoing hip replacement surgery for osteoarthritis with informed consent. MSCs were encapsulated into either NPgel or Bgel and cultured for up to 6 weeks in 5% (NPgel) or 21% (Bgel) O. 2. Histology and immunohistochemistry was utilized to determine phenotype. Both fat and bone marrow derived MSCs, were able to differentiate into both cell lineages. NPgel culture conditions increased expression of matrix components such as collagen II and aggrecan and NP phenotypic markers FOXF1 and PAX1, whereas Bgel induced expression of collagen I and osteopontin, indicative of osteogenic differentiation. Conclusion. NPgel and Bgel were able to differentiate patient derived MSCs from different sources into both NP and osteogenic lineages, which may give rise to novel treatment strategies for IVD degeneration and spinal fusion, enabling choice for cell source according to patients' circumstances and needs. C Le Maitre and C Sammon hold a patent for the hydrogel described. Funded by MRC and Versus Arthritis


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_10 | Pages 43 - 43
1 Oct 2019
Chitgopkar S
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Background. Acute lumbar radiculopathy is a very painful condition sometimes requiring admission for strong analgesia. Purpose. To evaluate the efficacy of distal nerve root blocks as an outpatient procedure for immediate pain relief. Methods. Local anaesthetic was injected in the distal nerve root areas of the leg and foot in the clinic in patients with lumbar radiculopathy who consented to the procedure. Results. There were 29 patients, 18 females and 11 males, aged 25 to 76 years. 13 patients had acute lumbar disc prolapse, 11 had lumbar canal stenosis, 2 had annular tears and one a facet joint cyst. The VAS pain scores ranged from 3 to 11 (patient's description), with an average VAS score of 7.5. The improvement in VAS scores was between 2 and 9 with average improvement of 6. 19 patients had associated back pain which improved in 14. Walking improved in all 29 patients. Pain relief was immediate in all patients. This lasted from 30 min to 11 days with one patient having no recurrence. 27 patients had at least 24 hours pain relief. All patients could be sent home immediately after the procedure. 12 patients had recent onset of foot weakness which improved one MRC grade immediately after the injection. The analgesic effect was most significant in acute disc prolapse. There were no complications. Conclusion. This technique is simple and would be valuable in the acute setting to provide immediate pain relief allowing immediate discharge from accident and emergency. Conflicts of interest: None. Sources of funding: None


Bone & Joint Open
Vol. 4, Issue 8 | Pages 573 - 579
8 Aug 2023
Beresford-Cleary NJA Silman A Thakar C Gardner A Harding I Cooper C Cook J Rothenfluh DA

Aims

Symptomatic spinal stenosis is a very common problem, and decompression surgery has been shown to be superior to nonoperative treatment in selected patient groups. However, performing an instrumented fusion in addition to decompression may avoid revision and improve outcomes. The aim of the SpInOuT feasibility study was to establish whether a definitive randomized controlled trial (RCT) that accounted for the spectrum of pathology contributing to spinal stenosis, including pelvic incidence-lumbar lordosis (PI-LL) mismatch and mobile spondylolisthesis, could be conducted.

Methods

As part of the SpInOuT-F study, a pilot randomized trial was carried out across five NHS hospitals. Patients were randomized to either spinal decompression alone or spinal decompression plus instrumented fusion. Patient-reported outcome measures were collected at baseline and three months. The intended sample size was 60 patients.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXI | Pages 6 - 6
1 Jul 2012
silmissä K Öga IB Øjnene der ser I Sell P Sell B
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It is not known how parents of children with scoliosis perceive cosmetic issues in their offspring. There is little clinical information regarding parental 'surrogate' assessment of a young persons' fears and beliefs regarding how a deformity affects the child and how that might influence the process of informed consent and surgical risk assessment. Method. Patients and their parents had a structured interview involving SRS20 and Walter Reed Visual Assessment Scale. The parents were asked to complete an SRS20 as they expected their child to complete it. That is they were asked to anticipate how the child might score and grade the SRS 20. Results. 28 patients, 6 males, 22 females, 8 females were pre-menarche, mean age 14 (12-17), mean cobb angle 57, completed the study. Mean parental age 45. There were 6 fathers and 22 mothers. The mean SRS scores for the domains for children were pain 2.49, self image 2.3 function 2.9 Mental health 2.9 Total 10.7. The mean SRS scores for the domains for the parents were pain 2.38 self image 2.39 function 2.97 Mental health 2.87 Total 10.5. There was no significant difference between mean scores for the four domains of the SRS20. Conclusion. Parents are remarkably good at estimating the SRS scores of the young person that they attend clinic with. Parents involved in the consent progress understand the areas where scoliosis impacts upon their child. This is reassuring information for the surgeon in informing the process of consent. COREC NUMBER: 07/H0402/67 Ethics approval


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_9 | Pages 18 - 18
1 Sep 2019
Reddington M Walters S Cohen J Baxter S Cole A
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Purpose of the study. The aims of the study were to explore the experiences of sciatica sufferers, their perceptions of physiotherapy and healthcare service provision. Methods. This was the qualitative element of a mixed methods study investigating the feasibility of early physiotherapy for sciatica. Participants in the pilot trial consented to take part in semi-structured interviews before and after they had undertaken an individualised physiotherapy programme. Data from the interviews was examined line by line using a thematic analysis approach with key themes and sub-themes emerging. Results. Thirty-three participants were recruited and a total of 45 interviews being carried out. 7 central themes and 17 sub-themes were generated from thematic analysis. The first-line treatment administered to all participants by their G.P was a combination of analgesia. The drugs used included paracetamol, ibuprofen, nefopam, diclofenac, tramadol, morphine, diazepam and baclofen. Neuropathic pain modulating medication such as amitriptyline, gabapentin or pregabalin was widely used. Participants reported that medication simply didn't provide sufficient pain relief at a dose where side-effects were acceptable. Twenty-four interviewees described the negative side-effects of the drugs including nausea, dizziness, confusion, constipation, drowsiness, impotence and bloating. Furthermore, participants were concerned about their ability to carry out normal day to day tasks such as childcare, work and driving due to the side-effects of the drugs. Conclusion. Sciatica can be all encompassing, with severe pain and disability. A range of medication is commonly used for pain relief. The results from this study suggest that the drugs don't provide significant pain relief without deleterious side-effects in some patients. No conflicts of interest for any authors. Sources of funding: MR is the recipient of a HEE/NIHR Clinical Doctoral Research Fellowship which funded the study


The Bone & Joint Journal
Vol. 106-B, Issue 7 | Pages 713 - 719
1 Jul 2024
Patel MS Shah S Elkazaz MK Shafafy M Grevitt MP

Aims

Historically, patients undergoing surgery for adolescent idiopathic scoliosis (AIS) have been nursed postoperatively in a critical care (CC) setting because of the challenges posed by prone positioning, extensive exposures, prolonged operating times, significant blood loss, major intraoperative fluid shifts, cardiopulmonary complications, and difficulty in postoperative pain management. The primary aim of this paper was to determine whether a scoring system, which uses Cobb angle, forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and number of levels to be fused, is a valid method of predicting the need for postoperative critical care in AIS patients who are to undergo scoliosis correction with posterior spinal fusion (PSF).

Methods

We retrospectively reviewed all AIS patients who had undergone PSF between January 2018 and January 2020 in a specialist tertiary spinal referral centre. All patients were assessed preoperatively in an anaesthetic clinic. Postoperative care was defined as ward-based (WB) or critical care (CC), based on the preoperative FEV1, FVC, major curve Cobb angle, and the planned number of instrumented levels.


The Bone & Joint Journal
Vol. 106-B, Issue 7 | Pages 705 - 712
1 Jul 2024
Karlsson T Försth P Öhagen P Michaëlsson K Sandén B

Aims

We compared decompression alone to decompression with fusion surgery for lumbar spinal stenosis, with or without degenerative spondylolisthesis (DS). The aim was to evaluate if five-year outcomes differed between the groups. The two-year results from the same trial revealed no differences.

Methods

The Swedish Spinal Stenosis Study was a multicentre randomized controlled trial with recruitment from September 2006 to February 2012. A total of 247 patients with one- or two-level central lumbar spinal stenosis, stratified by the presence of DS, were randomized to decompression alone or decompression with fusion. The five-year Oswestry Disability Index (ODI) was the primary outcome. Secondary outcomes were the EuroQol five-dimension questionnaire (EQ-5D), visual analogue scales for back and leg pain, and patient-reported satisfaction, decreased pain, and increased walking distance. The reoperation rate was recorded.


Bone & Joint Research
Vol. 12, Issue 9 | Pages 522 - 535
4 Sep 2023
Zhang G Li L Luo Z Zhang C Wang Y Kang X

Aims

This study aimed, through bioinformatics analysis and in vitro experiment validation, to identify the key extracellular proteins of intervertebral disc degeneration (IDD).

Methods

The gene expression profile of GSE23130 was downloaded from the Gene Expression Omnibus (GEO) database. Extracellular protein-differentially expressed genes (EP-DEGs) were screened by protein annotation databases, and we used Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) to analyze the functions and pathways of EP-DEGs. STRING and Cytoscape were used to construct protein-protein interaction (PPI) networks and identify hub EP-DEGs. NetworkAnalyst was used to analyze transcription factors (TFs) and microRNAs (miRNAs) that regulate hub EP-DEGs. A search of the Drug Signatures Database (DSigDB) for hub EP-DEGs revealed multiple drug molecules and drug-target interactions.


Aims

In this investigation, we administered oxidative stress to nucleus pulposus cells (NPCs), recognized DNA-damage-inducible transcript 4 (DDIT4) as a component in intervertebral disc degeneration (IVDD), and devised a hydrogel capable of conveying small interfering RNA (siRNA) to IVDD.

Methods

An in vitro model for oxidative stress-induced injury in NPCs was developed to elucidate the mechanisms underlying the upregulation of DDIT4 expression, activation of the reactive oxygen species (ROS)-thioredoxin-interacting protein (TXNIP)-NLRP3 signalling pathway, and nucleus pulposus pyroptosis. Furthermore, the mechanism of action of small interfering DDIT4 (siDDIT4) on NPCs in vitro was validated. A triplex hydrogel named siDDIT4@G5-P-HA was created by adsorbing siDDIT4 onto fifth-generation polyamidoamine (PAMAM) dendrimer using van der Waals interactions, and then coating it with hyaluronic acid (HA). In addition, we established a rat puncture IVDD model to decipher the hydrogel’s mechanism in IVDD.


The Bone & Joint Journal
Vol. 105-B, Issue 4 | Pages 400 - 411
15 Mar 2023
Hosman AJF Barbagallo G van Middendorp JJ

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).

Methods

Patients with tSCI requiring surgical spinal decompression presenting to 17 centres in Europe were recruited. Depending on the timing of decompression, patients were divided into early (≤ 12 hours after injury) and late (> 12 hours and < 14 days after injury) groups. The American Spinal Injury Association neurological (ASIA) examination was performed at baseline (after injury but before decompression) and at 12 months. The primary endpoint was the change in Lower Extremity Motor Score (LEMS) from baseline to 12 months.


Bone & Joint Research
Vol. 12, Issue 2 | Pages 133 - 137
10 Feb 2023
Liao H Tsai C

Aims

To investigate the correlations among cytokines and regulatory T cells (T-regs) in ankylosing spondylitis (AS) patients, and their changes after anti-tumour necrosis factor-α (TNF-α) treatment.

Methods

We included 72 AS patients with detailed medical records, disease activity score (Bath Ankylosing Spondylitis Disease Activity Index), functional index (Bath Ankylosing Spondylitis Functional Index), and laboratory data (interleukin (IL)-2, IL-4, IL-10, TNF-α, interferon (IFN)-γ, transforming growth factor (TGF)-β, ESR, and CRP). Their peripheral blood mononuclear cells (PBMCs) were marked with anti-CD4, anti-CD25, and anti-FoxP3 antibodies, and triple positive T cells were gated by flow cytometry as T-regs. Their correlations were calculated and the changes after anti-TNF-α therapy were compared.