目的:探讨老年腰椎结核Ⅰ期行皮质骨轨迹(cortical bone trajectory,CBT)螺钉技术联合前路小切口病灶清除支撑植骨的临床疗效。方法:对2015年2月至2016年12月采用CBT螺钉技术联合前路小切口病灶清除治疗的22例腰椎结核患者进行回顾性分...目的:探讨老年腰椎结核Ⅰ期行皮质骨轨迹(cortical bone trajectory,CBT)螺钉技术联合前路小切口病灶清除支撑植骨的临床疗效。方法:对2015年2月至2016年12月采用CBT螺钉技术联合前路小切口病灶清除治疗的22例腰椎结核患者进行回顾性分析,其中男13例,女9例,年龄(73.3±7.1)岁。Frankel分级:B级2例,C级5例,D级6例,E级9例。对手术前后视觉模拟评分(VAS)、Cobb角、红细胞沉降率(ESR)、Frankel分级进行分析,并观察手术并发症、内植物稳定性和植骨融合情况。结果:22例患者均获得随访,时间12～24(18.7±4.6)个月。有2例患者术后3个月发现前路手术对侧腰大肌脓肿增大,行B超定位下置管引流后治愈。余20例均Ⅰ期愈合,无窦道形成及脊柱结核复发。末次随访Frankel分级:C级3例,D级5例,E级14例。末次随访后凸Cobb角由术前的(17.68±3.86)°减少至(4.77±2.47)°;VAS评分由术前的(6.95±2.26)分减少至末次随访时的(2.18±1.59)分;ESR由术前的(47.14±20.85) mm/h降至末次随访的(16.77±11.42) mm/h。X线、CT检查均提示已骨性愈合,平均融合时间为(4.9±1.2)个月。结论:采用Ⅰ期皮质骨轨迹螺钉技术联合前路小切口病灶清除支撑植骨治疗老年腰椎结核是较为有效、安全的方法。展开更多
[目的]探讨在腰椎后路减压植骨融合内固定术治疗老年骨质疏松腰椎退变性疾病中应用皮质骨轨迹螺钉技术(cortical bone trajectory,CBT)进行内固定操作的临床疗效。[方法]选择2014年1月~2015年7月本治疗组经保守治疗无效的骨质疏松腰椎...[目的]探讨在腰椎后路减压植骨融合内固定术治疗老年骨质疏松腰椎退变性疾病中应用皮质骨轨迹螺钉技术(cortical bone trajectory,CBT)进行内固定操作的临床疗效。[方法]选择2014年1月~2015年7月本治疗组经保守治疗无效的骨质疏松腰椎退变性疾病患者30例进行腰椎后路减压植骨融合内固定术手术治疗,18例采用传统椎弓根螺钉内固定技术,12例采用CBT螺钉内固定技术,观察两组患者恢复情况、手术时间、术中出血量和手术前后VAS评分、JOA评分及改善率等。[结果]所有患者症状均得到改善,术后JOA和VAS评分均有显著提高,两组间在手术时间、出血量、JOA评分和VAS评分比较差异无统计学意义。传统组3例患者术中一侧椎弓根螺钉置入失败,遂改行CBT固定,余患者置钉顺利。CBT组患者手术置钉过程未出现螺钉把持力不佳置钉失败、皮质骨钉道骨折断裂等情况。所有患者没有出现置钉引起的血管、神经损伤。术后影像学随访未见螺钉松动、脱落、塌陷等,螺钉、连接棒、融合器均在位,位置佳。所有病例无不良事件发生。[结论]应用CBT螺钉技术进行腰椎内固定治疗老年骨质疏松腰椎退变性疾病具有置入过程更安全;更靠内的进钉点避免了广泛的肌肉剥离及组织切除,具有损伤小、恢复快,增加了和皮质骨的接触面,牢固性更强等优势,早期疗效满意。展开更多
[目的]通过有限元方法对传统轨迹椎弓根(traditional trajectory,TT)螺钉与椎弓根皮质骨轨迹(cortical bone trajectory,CBT)螺钉固定在骨质疏松椎体上的应用进行生物力学分析。[方法]通过1名骨质疏松症患者(骨密度T值<-0.25 SD)建...[目的]通过有限元方法对传统轨迹椎弓根(traditional trajectory,TT)螺钉与椎弓根皮质骨轨迹(cortical bone trajectory,CBT)螺钉固定在骨质疏松椎体上的应用进行生物力学分析。[方法]通过1名骨质疏松症患者(骨密度T值<-0.25 SD)建立L2、3椎体功能单元骨质疏松有限元模型,模拟传统椎弓根螺钉和皮质骨轨迹螺钉两种固定方式进行固定,分别在静载、前屈、后伸、侧屈、旋转五种状态下加载并测量钉道周围骨质的CT值,比较各部件最大应力值、内固定装置稳定性(以椎间活动度表示)及钉道周围骨质CT值的差异。[结果]CBT组在各个状态下椎骨和内固定装置的最大应力值均大于TT组,椎间活动度在静载、前屈、后伸、旋转四个状态下CBT组均小于TT组,侧屈时CBT组大于TT组;CBT组钉道周围骨质的CT值为(192.20±34.85)Hu,TT组为(118.00±15.90)Hu,组间对比差异有统计学意义(P=0.002)。[结论]CBT组屈伸、旋转状态下稳定性大于TT组,侧屈时CBT组稍小于TT组;CBT组钉道周围骨质CT值大于TT组。CBT螺钉技术是骨质疏松患者腰椎内固定的一种优选方式。展开更多
Objective The purpose of this study was to demonstrate the lumbar pedicle cortical bone trajectory （CBT） screw fixation technique,a new fixation technique for lumbar surgery.Data sources The data analyzed in this re...Objective The purpose of this study was to demonstrate the lumbar pedicle cortical bone trajectory （CBT） screw fixation technique,a new fixation technique for lumbar surgery.Data sources The data analyzed in this review are mainly from articles reported in PubMed published from 1994 to 2014.Study selection Original articles and critical reviews relevant to CBT technique and lumbar pedicle fixation were selected.Results CBT technique was firstly introduced as a new fixation method for lumbar pedicle surgery in 2009.The concepts,morphometric study,biomechanical characteristics and clinical applications of CBT technique were reviewed.The insertional point of CBT screw is located at the lateral point of the pars interarticularis,and its trajectory follows a caudocephalad path sagittally and a laterally directed path in the transverse plane.CBT technique can be used for posterior fixation during lumbar fusion procedures.This technique is a minimally invasive surgery,which affords better biomechanical stability,fixation strength and surgical safety.Therefore,CBT technique has the greatest benefit in lumbar pedicle surgery for patients with osteoporosis and obesity.Conclusion CBT technique is a better alternative option of lumbar pedicle fixation,especially for patients with osteoporosis and obesity.展开更多
目的对比骨科手术机器人辅助与徒手皮质骨螺钉置钉在脊柱内固定手术中的安全性与准确性。方法回顾分析2019年12月至2021年6月于首都医科大学附属北京朝阳医院骨科接受皮质骨轨迹螺钉(cortical bone trajectory,CBT)治疗单节段退行性腰...目的对比骨科手术机器人辅助与徒手皮质骨螺钉置钉在脊柱内固定手术中的安全性与准确性。方法回顾分析2019年12月至2021年6月于首都医科大学附属北京朝阳医院骨科接受皮质骨轨迹螺钉(cortical bone trajectory,CBT)治疗单节段退行性腰椎疾病的71例患者。将接受X线透视辅助徒手CBT螺钉置入的患者作为徒手组(n=35),接受机器人辅助CBT螺钉置入的作为机器人组(n=36)。螺钉置钉准确性和关节突侵犯情况通过术后电子计算机断层扫描(computed tomography,CT)三维重建评估。对比两组平均单枚螺钉的置钉时间、术中出血量及医务人员术中射线暴露情况。结果71例患者一共植入284枚CBT螺钉,其中140枚由徒手组完成,144枚由机器人组完成。机器人组的准确率显著高于徒手组(92.36%vs 82.86%,P=0.015)。机器人组关节突侵犯发生率显著低于徒手组(22.22%vs 40.00%,P=0.022)。但是,单颗螺钉置钉时间机器人组显著长于徒手组[(501.92±70.08)s vs(382.54±63.21)s,P=0.000]。术中医务人员辐射暴露时间徒手组明显高于机器人组[(56.81±16.09)s vs(34.43±16.91)s,P=0.000]。结论机器人辅助植入CBT螺钉可以有效提高螺钉置入准确性并减少了上关节突的侵犯率和医务人员的辐射暴露,但会增加螺钉的置钉时间与手术时间。本中心大约在12台手术后获得了平稳的机器人辅助CBT技术学习曲线。展开更多
The cortical bone trajectory(CBT) is a novel technique in lumbar fixation and fusion.The unique caudocephalad and medial-lateral screw trajectories endow it with excellent screw purchase for vertebral fixation via a m...The cortical bone trajectory(CBT) is a novel technique in lumbar fixation and fusion.The unique caudocephalad and medial-lateral screw trajectories endow it with excellent screw purchase for vertebral fixation via a minimally invasive method.The combined use of CBT screws with transforaminal or posterior lumbar interbody fusion can treat a variety of lumbar diseases,including spondylolisthesis or stenosis,and can also be used as a remedy for revision surgery when the pedicle screw fails.CBT has obvious advantages in terms of surgical trauma,postoperative recovery,prevention and treatment of adjacent vertebral disease,and the surgical treatment of obese and osteoporosis patients.However,the concept of CBT internal fixation technology appeared relatively recently;consequently,there are few relevant clinical studies,and the long-term clinical efficacy and related complications have not been reported.Therefore,large sample and prospective studies are needed to further reveal the long-term complications and fusion rate.As a supplement to the traditional pedicle trajectory fixation technique,the CBT technique is a good choice for the treatment of lumbar diseases with accurate screw placement and strict indications and is thus deserving of clinical recommendation.展开更多
Lumbar degenerative disc disease(DDD)in the elderly population remains a global health problem,especially in patients with osteoporosis.Osteoporosis in the elderly can cause failure of internal fixation.Cortical bone ...Lumbar degenerative disc disease(DDD)in the elderly population remains a global health problem,especially in patients with osteoporosis.Osteoporosis in the elderly can cause failure of internal fixation.Cortical bone trajectory(CBT)is an effective,safe and minimally invasive technique for the treatment of lumbar DDD in patients with osteoporosis.In this review,we analyzed the anatomy,biomechanics,and advantages of the CBT technique in lumbar DDD and revision surgery.Additionally,the clinical trials and case reports,indications,advancements and limitations of this technique were further discussed and reviewed.Finally,we concluded that the CBT technique can be a practical,effective and safe alternative to traditional pedicle screw fixation,especially in DDD patients with osteoporosis.展开更多
文摘目的:探讨老年腰椎结核Ⅰ期行皮质骨轨迹(cortical bone trajectory,CBT)螺钉技术联合前路小切口病灶清除支撑植骨的临床疗效。方法:对2015年2月至2016年12月采用CBT螺钉技术联合前路小切口病灶清除治疗的22例腰椎结核患者进行回顾性分析,其中男13例,女9例,年龄(73.3±7.1)岁。Frankel分级:B级2例,C级5例,D级6例,E级9例。对手术前后视觉模拟评分(VAS)、Cobb角、红细胞沉降率(ESR)、Frankel分级进行分析,并观察手术并发症、内植物稳定性和植骨融合情况。结果:22例患者均获得随访,时间12～24(18.7±4.6)个月。有2例患者术后3个月发现前路手术对侧腰大肌脓肿增大,行B超定位下置管引流后治愈。余20例均Ⅰ期愈合,无窦道形成及脊柱结核复发。末次随访Frankel分级:C级3例,D级5例,E级14例。末次随访后凸Cobb角由术前的(17.68±3.86)°减少至(4.77±2.47)°;VAS评分由术前的(6.95±2.26)分减少至末次随访时的(2.18±1.59)分;ESR由术前的(47.14±20.85) mm/h降至末次随访的(16.77±11.42) mm/h。X线、CT检查均提示已骨性愈合,平均融合时间为(4.9±1.2)个月。结论:采用Ⅰ期皮质骨轨迹螺钉技术联合前路小切口病灶清除支撑植骨治疗老年腰椎结核是较为有效、安全的方法。
文摘[目的]探讨在腰椎后路减压植骨融合内固定术治疗老年骨质疏松腰椎退变性疾病中应用皮质骨轨迹螺钉技术(cortical bone trajectory,CBT)进行内固定操作的临床疗效。[方法]选择2014年1月~2015年7月本治疗组经保守治疗无效的骨质疏松腰椎退变性疾病患者30例进行腰椎后路减压植骨融合内固定术手术治疗,18例采用传统椎弓根螺钉内固定技术,12例采用CBT螺钉内固定技术,观察两组患者恢复情况、手术时间、术中出血量和手术前后VAS评分、JOA评分及改善率等。[结果]所有患者症状均得到改善,术后JOA和VAS评分均有显著提高,两组间在手术时间、出血量、JOA评分和VAS评分比较差异无统计学意义。传统组3例患者术中一侧椎弓根螺钉置入失败,遂改行CBT固定,余患者置钉顺利。CBT组患者手术置钉过程未出现螺钉把持力不佳置钉失败、皮质骨钉道骨折断裂等情况。所有患者没有出现置钉引起的血管、神经损伤。术后影像学随访未见螺钉松动、脱落、塌陷等,螺钉、连接棒、融合器均在位,位置佳。所有病例无不良事件发生。[结论]应用CBT螺钉技术进行腰椎内固定治疗老年骨质疏松腰椎退变性疾病具有置入过程更安全;更靠内的进钉点避免了广泛的肌肉剥离及组织切除,具有损伤小、恢复快,增加了和皮质骨的接触面,牢固性更强等优势,早期疗效满意。
文摘[目的]通过有限元方法对传统轨迹椎弓根(traditional trajectory,TT)螺钉与椎弓根皮质骨轨迹(cortical bone trajectory,CBT)螺钉固定在骨质疏松椎体上的应用进行生物力学分析。[方法]通过1名骨质疏松症患者(骨密度T值<-0.25 SD)建立L2、3椎体功能单元骨质疏松有限元模型,模拟传统椎弓根螺钉和皮质骨轨迹螺钉两种固定方式进行固定,分别在静载、前屈、后伸、侧屈、旋转五种状态下加载并测量钉道周围骨质的CT值,比较各部件最大应力值、内固定装置稳定性(以椎间活动度表示)及钉道周围骨质CT值的差异。[结果]CBT组在各个状态下椎骨和内固定装置的最大应力值均大于TT组,椎间活动度在静载、前屈、后伸、旋转四个状态下CBT组均小于TT组,侧屈时CBT组大于TT组;CBT组钉道周围骨质的CT值为(192.20±34.85)Hu,TT组为(118.00±15.90)Hu,组间对比差异有统计学意义(P=0.002)。[结论]CBT组屈伸、旋转状态下稳定性大于TT组,侧屈时CBT组稍小于TT组;CBT组钉道周围骨质CT值大于TT组。CBT螺钉技术是骨质疏松患者腰椎内固定的一种优选方式。
文摘Objective The purpose of this study was to demonstrate the lumbar pedicle cortical bone trajectory （CBT） screw fixation technique,a new fixation technique for lumbar surgery.Data sources The data analyzed in this review are mainly from articles reported in PubMed published from 1994 to 2014.Study selection Original articles and critical reviews relevant to CBT technique and lumbar pedicle fixation were selected.Results CBT technique was firstly introduced as a new fixation method for lumbar pedicle surgery in 2009.The concepts,morphometric study,biomechanical characteristics and clinical applications of CBT technique were reviewed.The insertional point of CBT screw is located at the lateral point of the pars interarticularis,and its trajectory follows a caudocephalad path sagittally and a laterally directed path in the transverse plane.CBT technique can be used for posterior fixation during lumbar fusion procedures.This technique is a minimally invasive surgery,which affords better biomechanical stability,fixation strength and surgical safety.Therefore,CBT technique has the greatest benefit in lumbar pedicle surgery for patients with osteoporosis and obesity.Conclusion CBT technique is a better alternative option of lumbar pedicle fixation,especially for patients with osteoporosis and obesity.
基金Supported by The Joint Project of Chongqing Health Commission and Science and Technology Bureau,No.2022QNXM066The Top-notch Young Talent Project of Chongqing Traditional Chinese Medicine Hospital,No. CQSZYY2020008。
文摘The cortical bone trajectory(CBT) is a novel technique in lumbar fixation and fusion.The unique caudocephalad and medial-lateral screw trajectories endow it with excellent screw purchase for vertebral fixation via a minimally invasive method.The combined use of CBT screws with transforaminal or posterior lumbar interbody fusion can treat a variety of lumbar diseases,including spondylolisthesis or stenosis,and can also be used as a remedy for revision surgery when the pedicle screw fails.CBT has obvious advantages in terms of surgical trauma,postoperative recovery,prevention and treatment of adjacent vertebral disease,and the surgical treatment of obese and osteoporosis patients.However,the concept of CBT internal fixation technology appeared relatively recently;consequently,there are few relevant clinical studies,and the long-term clinical efficacy and related complications have not been reported.Therefore,large sample and prospective studies are needed to further reveal the long-term complications and fusion rate.As a supplement to the traditional pedicle trajectory fixation technique,the CBT technique is a good choice for the treatment of lumbar diseases with accurate screw placement and strict indications and is thus deserving of clinical recommendation.
基金Supported by National Natural Science Foundation of China,No.82202694。
文摘Lumbar degenerative disc disease(DDD)in the elderly population remains a global health problem,especially in patients with osteoporosis.Osteoporosis in the elderly can cause failure of internal fixation.Cortical bone trajectory(CBT)is an effective,safe and minimally invasive technique for the treatment of lumbar DDD in patients with osteoporosis.In this review,we analyzed the anatomy,biomechanics,and advantages of the CBT technique in lumbar DDD and revision surgery.Additionally,the clinical trials and case reports,indications,advancements and limitations of this technique were further discussed and reviewed.Finally,we concluded that the CBT technique can be a practical,effective and safe alternative to traditional pedicle screw fixation,especially in DDD patients with osteoporosis.
