Spinal Injuries

脊髓损伤
  • 文章类型: Journal Article
    背景:计算机断层扫描(CT)是颈椎(c-spine)评估的金标准。磁共振成像(MRI)由于其日益增加的可用性和缺乏辐射暴露而出现。然而,MRI既昂贵又耗时,质疑其在急诊科(ED)中的作用。这项研究调查了在ED中出现c脊柱损伤的患者增加MRI的价值。
    方法:我们进行了一项回顾性单中心队列研究,包括所有在ED中出现颈部外伤的患者,根据NEXUS标准接受成像。脊柱外科医生进行了全面审查,将每个病例分为“c-脊柱受伤”和“c-脊柱未受伤”。根据AO脊柱分类对损伤进行分类。我们评估了CT检测到的c脊柱损伤患者,他随后接受了MRI检查。在这个子集中,在两种影像学检查中分别对损伤进行分类.我们监测了额外MRI后的治疗变化,以评估该队列的特征以及AO脊柱神经病学/修饰符修饰符的影响。
    结果:我们确定了4496名受试者,在回顾性病例审查中,2321例符合入选条件,186例被诊断为c脊柱损伤。最初通过CT确定的56例c脊柱损伤患者接受了额外的MRI检查。额外的MRI显着延长了患者在ED中的停留时间(几何平均比1.32,p<0.001)。在这个队列中,25%的患者改变了治疗策略,在有神经系统症状的患者中(AON≥1),45.8%经历了治疗改变。N阳性的患者,与神经系统完整的患者相比,额外MRI后治疗改变的几率高12.4倍(95%CI2.7-90.7,p<0.01)。
    结论:我们的研究表明,患有脊柱损伤和神经系统症状的患者可以从额外的MRI中获益。在神经系统完整的患者中,只有在逐案仔细评估时,额外的MRI才有价值.
    BACKGROUND: Computed Tomography (CT) is the gold standard for cervical spine (c-spine) evaluation. Magnetic resonance imaging (MRI) emerges due to its increasing availability and the lack of radiation exposure. However, MRI is costly and time-consuming, questioning its role in the emergency department (ED). This study investigates the added the value of an additional MRI for patients presenting with a c-spine injury in the ED.
    METHODS: We conducted a retrospective monocenter cohort study that included all patients with neck trauma presenting in the ED, who received imaging based on the NEXUS criteria. Spine surgeons performed a full-case review to classify each case into \"c-spine injured\" and \"c-spine uninjured\". Injuries were classified according to the AO Spine classification. We assessed patients with a c-spine injury detected by CT, who received a subsequent MRI. In this subset, injuries were classified separately in both imaging modalities. We monitored the treatment changes after the additional MRI to evaluate characteristics of this cohort and the impact of the AO Spine Neurology/Modifier modifiers.
    RESULTS: We identified 4496 subjects, 2321 were eligible for inclusion and 186 were diagnosed with c-spine injuries in the retrospective case review. Fifty-six patients with a c-spine injury initially identified through CT received an additional MRI. The additional MRI significantly extended (geometric mean ratio 1.32, p < 0.001) the duration of the patients\' stay in the ED. Of this cohort, 25% had a change in treatment strategy and among the patients with neurological symptoms (AON ≥ 1), 45.8% experienced a change in treatment. Patients that were N-positive, had a 12.4 (95% CI 2.7-90.7, p < 0.01) times higher odds of a treatment change after an additional MRI than neurologically intact patients.
    CONCLUSIONS: Our study suggests that patients with a c-spine injury and neurological symptoms benefit from an additional MRI. In neurologically intact patients, an additional MRI retains value only when carefully evaluated on a case-by-case basis.
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  • 文章类型: Journal Article
    背景:创伤性脊髓损伤(TSI)是一种具有重大全球健康负担的疾病,特别是在低收入和中等收入国家,道路交通相关的创伤正在增加。这项研究比较了人口统计学,损伤模式,以及由道路交通事故(RTA)引起的TSI与非交通相关的TSI的结果。
    方法:使用坦桑尼亚Muhimbili骨科研究所(MOI)的神经创伤注册表进行了回顾性分析,全国脊柱损伤转诊中心.患者的社会人口统计学特征,损伤水平,和严重程度在不同的损伤机制中进行比较。神经系统的改善,神经系统恶化,并比较了通过RTA与非RTA维持TSI的死亡率,使用单变量和多变量分析。
    结果:共纳入626例患者,其中302人(48%)与RTA相关。中位年龄34岁,男性532人(85%)。与非RTA原因相比,RTA的男性优势较低(238/302,79%与294/324,91%,p<0.001),宫颈损伤的比例更高(144/302,48%vs.122/324,38%,p<0.001)。RTA和非RTA机制在损伤严重程度上没有发现显著差异,入场时间,住院时间,手术干预,神经系统的结果,或住院死亡率。神经系统预后改善与不完全损伤(AISB-D)相关,而较高的死亡率与宫颈损伤和完全(AISA)损伤有关。
    结论:我们在坦桑尼亚城市的研究发现,道路交通事故(RTA)引起的脊柱损伤与非RTA原因之间的结果没有显着差异,提示脊柱创伤项目需要公平的资源分配。强调了颈椎损伤和死亡率上升之间的关键联系,我们的研究结果呼吁针对创伤性脊髓损伤(TSI)的所有原因进行有针对性的干预.我们主张建立一个全面的创伤护理系统,融合有效的院前护理,专门治疗,和预防措施,旨在提高结果并确保低收入和中等收入国家创伤护理的公平性。
    BACKGROUND: Traumatic spinal injury (TSI) is a disease of significant global health burden, particularly in low and middle-income countries where road traffic-related trauma is increasing. This study compared the demographics, injury patterns, and outcomes of TSI caused by road traffic accidents (RTAs) to non-traffic related TSI.
    METHODS: A retrospective analysis was conducted using a neurotrauma registry from the Muhimbili Orthopaedic Institute (MOI) in Tanzania, a national referral center for spinal injuries. Patient sociodemographic characteristics, injury level, and severity were compared across mechanisms of injury. Neurological improvement, neurological deterioration, and mortality were compared between those sustaining TSI through an RTA versus non-RTA, using univariable and multivariable analyses.
    RESULTS: A total of 626 patients were included, of which 302 (48%) were RTA-related. The median age was 34 years, and 532 (85%) were male. RTAs had a lower male preponderance compared to non-RTA causes (238/302, 79% vs. 294/324, 91%, p<0.001) and a higher proportion of cervical injuries (144/302, 48% vs. 122/324, 38%, p<0.001). No significant differences between RTA and non-RTA mechanisms were found in injury severity, time to admission, length of hospital stay, surgical intervention, neurological outcomes, or in-hospital mortality. Improved neurological outcomes were associated with incomplete injuries (AIS B-D), while higher mortality rates were linked to cervical injuries and complete (AIS A) injuries.
    CONCLUSIONS: Our study in urban Tanzania finds no significant differences in outcomes between spinal injuries from road traffic accidents (RTAs) and non-RTA causes, suggesting the need for equitable resource allocation in spine trauma programs. Highlighting the critical link between cervical injuries and increased mortality, our findings call for targeted interventions across all causes of traumatic spinal injuries (TSI). We advocate for a comprehensive trauma care system that merges efficient pre-hospital care, specialized treatment, and prevention measures, aiming to enhance outcomes and ensure equity in trauma care in low- and middle-income countries.
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  • 文章类型: Journal Article
    背景:颈椎前路椎间盘切除术和融合术(ACDF)和颈椎前路椎体切除术和融合术(ACCF)都是治疗颈椎下病变的常见外科手术。虽然最近的评论表明,与ACDF相比,ACCF提供了更好的解压缩结果,该手术与手术风险增加有关.尽管如此,ACCF在创伤性背景下的使用描述不佳.这项研究的目的是评估ACCF与更常见的ACDF相比的安全性。
    方法:所有接受ACCF或ACDF治疗超过2个椎间盘间隙和3个椎体水平的颈椎下损伤的患者,2006年至2018年,在研究中心,有资格列入。根据年龄和术前ASIA评分对患者进行匹配。
    结果:匹配后,60例患者纳入匹配分析,其中30接受了ACDF和ACCF,分别。椎体损伤在ACCF组中更为常见(p=0.002),而创伤性椎间盘破裂在ACDF组更为常见(p=0.032)。手术并发症发生率差异无统计学意义,包括植入失败,伤口感染,吞咽困难,组间脑脊液渗漏(p≥0.05)。翻修手术率(p>0.999),死亡率(p=0.222),和长期ASIA评分(p=0.081)也相似。
    结论:不匹配和匹配分析的结果表明,与ACDF相比,ACCF具有可比的结果,并且没有额外的风险。因此,这是一种安全的方法,对于患有广泛的前柱损伤的患者应考虑。
    BACKGROUND: Anterior Cervical Discectomy and Fusion (ACDF) and Anterior Cervical Corpectomy and Fusion (ACCF) are both common surgical procedures in the management of pathologies of the subaxial cervical spine. While recent reviews have demonstrated ACCF to provide better decompression results compared to ACDF, the procedure has been associated with increased surgical risks. Nonetheless, the use of ACCF in a traumatic context has been poorly described. The aim of this study was to assess the safety of ACCF as compared to the more commonly performed ACDF.
    METHODS: All patients undergoing ACCF or ACDF for subaxial cervical spine injuries spanning over 2 disc-spaces and 3 vertebral-levels, between 2006 and 2018, at the study center, were eligible for inclusion. Patients were matched based on age and preoperative ASIA score.
    RESULTS: After matching, 60 patients were included in the matched analysis, where 30 underwent ACDF and ACCF, respectively. Vertebral body injury was significantly more common in the ACCF group (p = 0.002), while traumatic disc rupture was more frequent in the ACDF group (p = 0.032). There were no statistically significant differences in the rates of surgical complications, including implant failure, wound infection, dysphagia, CSF leakage between the groups (p ≥ 0.05). The rates of revision surgeries (p > 0.999), mortality (p = 0.222), and long-term ASIA scores (p = 0.081) were also similar.
    CONCLUSIONS: Results of both unmatched and matched analyses indicate that ACCF has comparable outcomes and no additional risks compared to ACDF. It is thus a safe approach and should be considered for patients with extensive anterior column injury.
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  • 文章类型: Journal Article
    背景:儿童颈椎损伤并不常见,但具有潜在的破坏性;创伤后不分青红皂白的颈部成像使儿童不必要地暴露于电离辐射。这项研究的目的是得出并验证儿科临床预测规则,该规则可以纳入算法中,以指导急诊科儿童对颈椎损伤的影像学筛查。
    方法:在这项前瞻性观察队列研究中,我们在美国儿科急诊应用研究网络(PECARN)附属医院的18个专门儿童急诊科筛查了0-17岁已知或疑似钝性创伤的儿童.通过满足以下标准之一,受伤儿童有资格参加推导或验证队列:由急诊医疗服务从受伤现场转移到急诊科;由创伤小组评估;并在到达PECARN附属急诊科之前或之前进行颈部成像,以关注颈椎损伤。排除了仅出现穿透性创伤的儿童。在查看登记的儿童颈部成像结果之前,主治急诊科临床医生完成了临床检查,并在电子问卷中前瞻性记录了颈椎损伤的危险因素.在急诊室就诊后21-28天内,通过影像学报告和监护人的电话随访确定颈椎损伤,儿童神经外科医生证实了颈椎损伤。通过具有稳健误差估计的双变量Poisson回归确定与颈椎损伤高风险(>10%)相关的因素。通过分类和回归树(CART)分析确定与不可忽略风险相关的因素.在颈椎损伤预测规则中组合变量。感兴趣的主要结果是初始创伤后28天内的颈椎损伤,需要住院观察或手术干预。为推导和验证队列计算规则绩效度量。在研究人群中应用了一种临床护理算法,用于确定哪些危险因素需要对钝性外伤后的颈椎损伤进行影像学检查,以评估对减少儿科急诊科CT和X射线使用的潜在影响。这项研究在ClinicalTrials.gov注册,NCT05049330。
    结果:九个急诊科参加了派生队列,9人参加了验证队列.总的来说,22430名出现已知或疑似钝性创伤的儿童被纳入(派生队列中的11857名儿童;验证队列中的10573名儿童)。占总人口的433(1·9%)已确认颈椎损伤。以下因素与颈椎损伤的高风险相关:精神状态改变(格拉斯哥昏迷量表[GCS]评分3-8分或警报上反应迟钝,言语,疼痛,意识无反应量表[AVPU]);异常气道,呼吸,或循环发现;和局灶性神经功能缺损,包括感觉异常,麻木,或弱点。在出现至少一种风险因素的衍生队列中,928人中,118人(12·7%)患有颈椎损伤(风险比8·9[95%CI7·1-11·2])。通过CART分析,以下因素与不可忽视的颈椎损伤风险相关:颈部疼痛;精神状态改变(GCS评分为9-14;AVPU的言语或疼痛;或其他精神状态改变的迹象);严重的头部受伤;严重的躯干受伤;和中线颈部压痛。高风险和CART衍生因素组合并应用于验证队列,敏感性为94·3%(95%CI90·7-97·9),60·4%(59·4-61·3)特异性,和99·9%(99·8-100·0)的阴性预测值。如果将该算法应用于所有参与者以指导成像的使用,我们估计,在不增加接受X线平片检查的儿童数量的情况下,在22430名儿童中,接受CT检查的儿童数量可能从3856名(17·2%)减少到1549名(6·9%).
    结论:纳入临床算法,颈椎损伤预测规则显示出很强的潜力,可以帮助临床医生确定哪些钝性外伤后到达急诊科的儿童应该接受X线颈部成像检查以发现潜在的颈椎损伤。临床算法的实施可以减少急诊科不必要的射线照相测试的使用,并消除高风险的辐射暴露。未来的工作应该在更一般的环境中验证预测规则和护理算法,例如社区急诊科。
    背景:EuniceKennedyShriver国家儿童健康与人类发展研究所以及美国妇幼保健局卫生与人类服务部卫生资源与服务管理局在紧急医疗服务儿童计划下。
    BACKGROUND: Cervical spine injuries in children are uncommon but potentially devastating; however, indiscriminate neck imaging after trauma unnecessarily exposes children to ionising radiation. The aim of this study was to derive and validate a paediatric clinical prediction rule that can be incorporated into an algorithm to guide radiographic screening for cervical spine injury among children in the emergency department.
    METHODS: In this prospective observational cohort study, we screened children aged 0-17 years presenting with known or suspected blunt trauma at 18 specialised children\'s emergency departments in hospitals in the USA affiliated with the Pediatric Emergency Care Applied Research Network (PECARN). Injured children were eligible for enrolment into derivation or validation cohorts by fulfilling one of the following criteria: transported from the scene of injury to the emergency department by emergency medical services; evaluated by a trauma team; and undergone neck imaging for concern for cervical spine injury either at or before arriving at the PECARN-affiliated emergency department. Children presenting with solely penetrating trauma were excluded. Before viewing an enrolled child\'s neck imaging results, the attending emergency department clinician completed a clinical examination and prospectively documented cervical spine injury risk factors in an electronic questionnaire. Cervical spine injuries were determined by imaging reports and telephone follow-up with guardians within 21-28 days of the emergency room encounter, and cervical spine injury was confirmed by a paediatric neurosurgeon. Factors associated with a high risk of cervical spine injury (>10%) were identified by bivariable Poisson regression with robust error estimates, and factors associated with non-negligible risk were identified by classification and regression tree (CART) analysis. Variables were combined in the cervical spine injury prediction rule. The primary outcome of interest was cervical spine injury within 28 days of initial trauma warranting inpatient observation or surgical intervention. Rule performance measures were calculated for both derivation and validation cohorts. A clinical care algorithm for determining which risk factors warrant radiographic screening for cervical spine injury after blunt trauma was applied to the study population to estimate the potential effect on reducing CT and x-ray use in the paediatric emergency department. This study is registered with ClinicalTrials.gov, NCT05049330.
    RESULTS: Nine emergency departments participated in the derivation cohort, and nine participated in the validation cohort. In total, 22 430 children presenting with known or suspected blunt trauma were enrolled (11 857 children in the derivation cohort; 10 573 in the validation cohort). 433 (1·9%) of the total population had confirmed cervical spine injuries. The following factors were associated with a high risk of cervical spine injury: altered mental status (Glasgow Coma Scale [GCS] score of 3-8 or unresponsive on the Alert, Verbal, Pain, Unresponsive scale [AVPU] of consciousness); abnormal airway, breathing, or circulation findings; and focal neurological deficits including paresthesia, numbness, or weakness. Of 928 in the derivation cohort presenting with at least one of these risk factors, 118 (12·7%) had cervical spine injury (risk ratio 8·9 [95% CI 7·1-11·2]). The following factors were associated with non-negligible risk of cervical spine injury by CART analysis: neck pain; altered mental status (GCS score of 9-14; verbal or pain on the AVPU; or other signs of altered mental status); substantial head injury; substantial torso injury; and midline neck tenderness. The high-risk and CART-derived factors combined and applied to the validation cohort performed with 94·3% (95% CI 90·7-97·9) sensitivity, 60·4% (59·4-61·3) specificity, and 99·9% (99·8-100·0) negative predictive value. Had the algorithm been applied to all participants to guide the use of imaging, we estimated the number of children having CT might have decreased from 3856 (17·2%) to 1549 (6·9%) of 22 430 children without increasing the number of children getting plain x-rays.
    CONCLUSIONS: Incorporated into a clinical algorithm, the cervical spine injury prediction rule showed strong potential for aiding clinicians in determining which children arriving in the emergency department after blunt trauma should undergo radiographic neck imaging for potential cervical spine injury. Implementation of the clinical algorithm could decrease use of unnecessary radiographic testing in the emergency department and eliminate high-risk radiation exposure. Future work should validate the prediction rule and care algorithm in more general settings such as community emergency departments.
    BACKGROUND: The Eunice Kennedy Shriver National Institute of Child Health and Human Development and the Health Resources and Services Administration of the US Department of Health and Human Services in the Maternal and Child Health Bureau under the Emergency Medical Services for Children programme.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    目的:评估不同的颈椎固定策略(完全固定,运动最小化或无固定),对院前和急诊科疑似颈椎损伤患者的神经系统和/或其他结局有影响。
    方法:系统评价遵循系统评价和荟萃分析指南的首选报告项目。
    方法:MEDLINE,EMBASE,CINAHL,搜索了Cochrane图书馆和两个研究登记册,直到2023年9月。
    方法:所有比较研究(前瞻性或回顾性),这些研究检查了钝性创伤后潜在颈椎损伤(影像学前)患者院前和急诊护理期间固定治疗的潜在益处和/或危害。
    方法:两位作者独立选择和提取数据。使用CochraneROBINS-I工具对非随机研究评估偏倚风险。数据的合成没有荟萃分析。
    结果:6项观察性研究符合纳入标准。方法学质量是可变的,大多数研究都有严重或严重的偏倚风险。在院前和急诊护理期间,颈椎固定的做法,如完全固定或运动最小化,没有明确的证据表明对预防神经系统恶化有益。脊髓损伤和死亡与无固定相比。然而,疼痛加重,不适和解剖并发症与固定过程中的衣领应用有关。
    结论:尽管证据有限,弱设计和有限的泛化能力,现有数据表明,院前颈椎固定(完全固定或运动最小化)由于缺乏明显的获益而价值不确定,并且可能导致潜在的并发症和不良结局.需要高质量的随机比较研究来解决这个重要问题。
    背景:PROSPERO注册FionaLecky,AbdullahPandor,MuniraEssat,AntheaSutton,卡尔·马林科维茨,戈登·富勒,斯图尔特·里德,杰森·史密斯.院前和急诊护理中钝性创伤后颈椎固定的系统评价。PROSPERO2022CRD42022349600可从以下网址获得:https://www.crd.约克。AC.uk/prospro/display_record.php?ID=CRD42022349600。
    OBJECTIVE: To assess whether different cervical spine immobilisation strategies (full immobilisation, movement minimisation or no immobilisation), impact neurological and/or other outcomes for patients with suspected cervical spinal injury in the pre-hospital and emergency department setting.
    METHODS: Systematic review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.
    METHODS: MEDLINE, EMBASE, CINAHL, Cochrane Library and two research registers were searched until September 2023.
    METHODS: All comparative studies (prospective or retrospective) that examined the potential benefits and/or harms of immobilisation practices during pre-hospital and emergency care of patients with a potential cervical spine injury (pre-imaging) following blunt trauma.
    METHODS: Two authors independently selected and extracted data. Risk of bias was appraised using the Cochrane ROBINS-I tool for non-randomised studies. Data were synthesised without meta-analysis.
    RESULTS: Six observational studies met the inclusion criteria. The methodological quality was variable, with most studies having serious or critical risk of bias. The effect of cervical spine immobilisation practices such as full immobilisation or movement minimisation during pre-hospital and emergency care did not show clear evidence of benefit for the prevention of neurological deterioration, spinal injuries and death compared with no immobilisation. However, increased pain, discomfort and anatomical complications were associated with collar application during immobilisation.
    CONCLUSIONS: Despite the limited evidence, weak designs and limited generalisability, the available data suggest that pre-hospital cervical spine immobilisation (full immobilisation or movement minimisation) was of uncertain value due to the lack of demonstrable benefit and may lead to potential complications and adverse outcomes. High-quality randomised comparative studies are required to address this important question.
    BACKGROUND: PROSPERO REGISTRATION Fiona Lecky, Abdullah Pandor, Munira Essat, Anthea Sutton, Carl Marincowitz, Gordon Fuller, Stuart Reid, Jason Smith. A systematic review of cervical spine immobilisation following blunt trauma in pre-hospital and emergency care. PROSPERO 2022 CRD42022349600 Available from: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022349600.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    颈椎损伤(CSI)与永久性残疾和死亡率高相关,这增加了全球医疗保健系统的社会经济负担。我们的目的是调查CSI的流行病学,手术治疗的频率,和相关神经功能缺损的发生率。
    我们从2017年1月至2021年12月对患有持续CSI的患者进行了回顾性单中心研究,仅在普罗夫迪夫都会区的一级创伤中心进行。人口统计,临床,和影像数据从医疗记录进行了彻底的分析。基于假设所有CSI患者都在单个创伤中心住院,根据整个Plovdiv都会区的人口计算手术治疗的病例百分比.
    本研究纳入了长期居住在普罗夫迪夫都会区的一百四十九名患者。149名患者中,97例(65.1%)接受手术治疗,61例(62.9%)年龄超过60岁。CSI的手术干预频率为2.9/100,000患者。每年,来自普罗夫迪夫都会区的10.6人因颈部受伤而患有神经功能缺损(1.6/100,000居民)。手术治疗组中完全性脊髓损伤的患者为11例(11.3%);即区域频率为每年2.2人。
    在普罗夫迪夫都会区,已经确定了每年需要手术干预的神经功能缺损的频率,尤其是年龄>60岁的患者。
    UNASSIGNED: Cervical spine injuries (CSI) are associated with high rates of permanent disability and mortality, which increase the socioeconomic burden on healthcare systems worldwide. We aimed to investigate the epidemiology of CSI, frequency of operative treatment, and incidence of associated neurological deficits at regional level.
    UNASSIGNED: We performed a retrospective monocentric study of patients with sustained CSI from January 2017 to December 2021, carried out only in a first-level trauma center in the Plovdiv metro region. Demographic, clinical, and imaging data from the medical records were thoroughly analyzed. Based on the assumption that all patients with CSI were hospitalized in single trauma center, the percentage of cases indicated for surgical treatment was calculated based on the population of the entire Plovdiv metro area.
    UNASSIGNED: One hundred forty-nine patients permanently residing in the Plovdiv metro region were included in this study. Of the 149 patients, 97 (65.1%) were surgically treated and 61 (62.9%) were over 60 years of age. The frequency of operative interventions for CSI was 2.9/100,000 patients. Annually, 10.6 people from the Plovdiv metro region suffer from neurological deficits as a result of neck injuries (1.6/100,000 residents). The number of patients with complete spinal cord injury in the surgically treated group was 11 (11.3%); that is, the regional frequency was 2.2 people per year.
    UNASSIGNED: In the Plovdiv metro region, a significant annual frequency of neurological deficits requiring surgical intervention for CSI has been established, especially in patients aged >60 years.
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  • 文章类型: Journal Article
    目的:本研究旨在开发和验证一种用于定量测量胸腰椎(TL)骨折特征的深度学习(DL)算法,并评估其在不同临床专业知识水平上的疗效。
    方法:使用预训练的基于掩码区域的卷积神经网络模型,最初开发用于椎体分割和骨折检测,我们对模型进行了微调,并增加了一个新的测量骨折指标的模块——压缩率(CR),Cobb角(CA),加德纳角(GA),和矢状指数(SI)-来自腰椎侧位X光片。这些指标来自3名放射科医生的六点标记,形成地面真相(GT)。培训使用了1,000张非骨折和318张骨折X光片,而验证使用了213个内部和200个外部断裂的射线照片。使用组内相关系数针对GT评估了DL算法量化断裂特征的准确性。此外,4位具有不同专业知识水平的读者,包括受训人员和一名脊柱主治医生,在有和没有DL辅助的情况下进行测量,并将其结果与GT和DL模型进行了比较。
    结果:对于CR,DL算法与GT表现出良好的一致性,CA,GA,和SI在内部(分别为0.860、0.944、0.932和0.779)和外部(分别为0.836、0.940、0.916和0.815)验证中。DL辅助测量显着改善了大多数测量值,特别是对于学员。
    结论:DL算法已被验证为使用射线照片定量TL断裂特征的准确工具。DL辅助测量有望加快诊断过程并增强可靠性,特别是受益于经验较少的临床医生。
    OBJECTIVE: This study aimed to develop and validate a deep learning (DL) algorithm for the quantitative measurement of thoracolumbar (TL) fracture features, and to evaluate its efficacy across varying levels of clinical expertise.
    METHODS: Using the pretrained Mask Region-Based Convolutional Neural Networks model, originally developed for vertebral body segmentation and fracture detection, we fine-tuned the model and added a new module for measuring fracture metrics-compression rate (CR), Cobb angle (CA), Gardner angle (GA), and sagittal index (SI)-from lumbar spine lateral radiographs. These metrics were derived from six-point labeling by 3 radiologists, forming the ground truth (GT). Training utilized 1,000 nonfractured and 318 fractured radiographs, while validations employed 213 internal and 200 external fractured radiographs. The accuracy of the DL algorithm in quantifying fracture features was evaluated against GT using the intraclass correlation coefficient. Additionally, 4 readers with varying expertise levels, including trainees and an attending spine surgeon, performed measurements with and without DL assistance, and their results were compared to GT and the DL model.
    RESULTS: The DL algorithm demonstrated good to excellent agreement with GT for CR, CA, GA, and SI in both internal (0.860, 0.944, 0.932, and 0.779, respectively) and external (0.836, 0.940, 0.916, and 0.815, respectively) validations. DL-assisted measurements significantly improved most measurement values, particularly for trainees.
    CONCLUSIONS: The DL algorithm was validated as an accurate tool for quantifying TL fracture features using radiographs. DL-assisted measurement is expected to expedite the diagnostic process and enhance reliability, particularly benefiting less experienced clinicians.
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  • 文章类型: Clinical Trial, Phase I
    鞘内递送自体培养扩增的脂肪组织间充质干细胞(AD-MSC)可用于治疗创伤性脊髓损伤(SCI)。这项I期试验(ClinicalTrials.gov:NCT03308565)包括10名受伤时具有美国脊髓损伤协会损伤量表(AIS)A级或B级的患者。这项研究的主要结果是安全性,由不良事件的性质和频率捕获。次要结果包括感觉和运动评分的变化,成像,脑脊液标记物,和体感诱发电位。该方案的制造和递送对于所有患者都是成功的。最常见的不良事件是头痛和肌肉骨骼疼痛,在8名患者中观察到。没有观察到严重的AE。在最后的后续行动中,7例患者在注射后AIS分级得到改善.总之,这项研究达到了主要终点,证明创伤性SCI患者对AD-MSC的采集和给药耐受性良好。
    Intrathecal delivery of autologous culture-expanded adipose tissue-derived mesenchymal stem cells (AD-MSC) could be utilized to treat traumatic spinal cord injury (SCI). This Phase I trial (ClinicalTrials.gov: NCT03308565) included 10 patients with American Spinal Injury Association Impairment Scale (AIS) grade A or B at the time of injury. The study\'s primary outcome was the safety profile, as captured by the nature and frequency of adverse events. Secondary outcomes included changes in sensory and motor scores, imaging, cerebrospinal fluid markers, and somatosensory evoked potentials. The manufacturing and delivery of the regimen were successful for all patients. The most commonly reported adverse events were headache and musculoskeletal pain, observed in 8 patients. No serious AEs were observed. At final follow-up, seven patients demonstrated improvement in AIS grade from the time of injection. In conclusion, the study met the primary endpoint, demonstrating that AD-MSC harvesting and administration were well-tolerated in patients with traumatic SCI.
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