Bryan颈人工椎间盘置换术失败原因分析

Objective To analyze the failed Bryan cervical disc arthroplasty and to improve its re-sults. Methods From October 2004 to October 2007, 48 patients underwent Bryan cervical disc arthro-plasty. All patients were followed up 2 to 38 months(mean 18 months). Among them, 4 failed cases were an-alyzed, which include 1 male and 3 females, with the age of 42, 51, 40, 49 years. Results Case 1 reported the brachial plexus injury as the result of the patient's shoulders being overstretched while fixing his position during operation, the muscular power of both upper extremities declining to degree Ⅱ and Ⅲ upon operation completion, which was restored to degree 4 when discharged from hospital (45 days after operation). Case 2 reported the compression on the spinal cord as the result of failure to remove the ossification of posterior lon-gitudinal ligament (OPLL) which had been identified by the preoperative CT; the patient complained of no release of symptoms after the operation and postoperative CT showed that compression still existed. Case 3 reported incomplete spinal cord injury caused by massive bleeding during decompression, a function of ex-tremely small vertebral canal anteroposterior diameter (5 mm shown in preoperative MRI); the muscular pow-er of left extremity dropped to degree 0 upon operation completion; the patient could walk with crutch 10 days after operation. Case 4 reported'heterotopic ossification (OP) which occurred 1 year after operation and became deteriorated 2 years later, but did not affect the motion of prosthesis. Conclusion Bryan disc arthroplasty is being extensively used as an effective procedure for decompression and reconstruction of the cervical disc. Excellent clinical results are related to strict selection of indications, perioperative manage-ment, and the experience and surgical technique of the surgeon are also important to the final outcome.     

椎间孔镜不同入路方式对髓核摘除量的影响及临床疗效分析北大核心CSCD

目的探讨椎间孔镜不同入路方式的选择对术中髓核摘除量的影响及术后临床疗效分析。方法 2011年8月—2014年12月采用腰椎侧后路微创椎间孔镜髓核摘除术治疗165例腰椎间盘突出症患者。根据术中椎间孔镜不同入路方式将患者分为4组:A组42例采用后外侧入路(Yeung技术),B组40例采用经典椎间孔入路[经椎间孔内窥镜脊柱系统(transforaminal endoscopic spine system,TESSYS)技术],C组43例采用改良椎间孔入路(improved transforaminal endoscopic access,ITEA),D组40例采用椎板间入路。各组患者性别、年龄、病程、侧别、病变节段等一般资料比较差异无统计学意义(P>0.05),具有可比性。计算并比较4组患者髓核摘除量;临床疗效采用疼痛视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI)、腰椎曲度指数(lumbar curvature index,LCI)和椎间隙高度等进行评估。结果 A、B、C、D组术中髓核摘除体积分别为(3.7±0.8)、(3.6±0.7)、(4.5±1.1)、(3.0±0.8)cm3,C组体积显著大于其余3组,D组体积显著小于其余3组,差异均有统计学意义(P<0.05);A、B组间比较差异无统计学意义(P>0.05)。术中出现脑脊液漏1例,无术后椎间隙感染、硬膜外血肿等并发症发生。术后患者切口均Ⅰ期愈合。患者均获随访,随访时间12～24个月,平均18个月;随访期间无典型术后髓核突出复发症状。术前各组间ODI评分、下腰痛VAS评分及双下肢VAS评分比较差异均无统计学意义(P>0.05);末次随访时各组上述评分均较术前显著改善(P<0.05);各组间比较差异均无统计学意义(P>0.05);各评分改善值各组间比较差异均无统计学意义(P>0.05)。术前及末次随访时各组间比较LCI及椎间隙高度差异均无统计学意义(P>0.05);各组末次随访时与术前比较以及末次随访时各组间LCI变化值和椎间隙高度丢失比较差异亦无统计学意义(P>0.05)。结论腰椎侧后路微创椎间孔镜术中,采用ITEA技术的手术操作范围更大,术中探查及摘除责任髓核更彻底;但需要根据患者腰椎间盘突出的症状及特点选择合适的手术入路方式。     

后路有限减压、固定、融合治疗退行性腰椎侧凸合并椎管狭窄症

目的 评价后路有限减压、固定、融合手术治疗退行性腰椎侧凸合并椎管狭窄症的疗效.方法 2001年1月至2008年1月.收治退行性腰椎侧凸合并椎管狭窄症患者36例,男2例,女34例;年龄51～76岁,平均62.3岁;合并椎管狭窄症病程10个月～7年,平均37个月.所有患者术前均行X线、CT及MR检查,5例患者行脊髓造影.术前Cobb角为24.0°±10.2°,腰椎前凸角22.6°±11.2°,C_7铅垂线(C_7PL)与S_1椎体后上缘距离(SVA)(7.8±6.6)cm,C_7PL与骶正中线距离(CSVL)(6.9±5.8)cm.患者采用后路有限减压、固定、融合手术进行治疗.术后进行随访,采用VAS、SF-36评分系统进行疗效评估.结果 手术时间115～164 min,平均130 min;出血量450～870 ml,平均625 ml.所有患者均获得随访,随访时间1.2～4年,平均2.4年.患者术后、末次随访平均Cobb角10.6°±8.5°、8.9°±5.3°,腰椎前凸角25.6°±14.3°、31.8°±13.4°,SVA(0.5±3.4)cm、(-1.2±2.7)cm,CSVL(2.9±1.4)cm、(1.7±1.2)cm,较术前均具有显著性差异.术后仅1例患者发生矫正丢失,无一例发生椎间隙塌陷、神经损伤、钉棒断裂等并发症.结论 后路有限减压、固定、融合手术是治疗退行性腰椎侧凸合并椎管狭窄症的有效手段.     

人工颈椎间盘置换对下颈椎活动影响的三维有限元分析

建立人工椎间盘置入后下颈椎C3~7的三维模型,分析颈椎人工椎间盘置换后下颈椎运动情况。根据1例人工椎间盘置入患者术后6个月CT片,应用有限元方法建立其包含BryanTM人工颈椎间盘假体的下颈椎三维有限元模型,导入Ansys 9.0中,对椎体皮质骨、松质骨、椎间盘用三维十节点四面体结构实体单元进行网格划分后进行分析。对模型加载2 N•m的力矩,观察其在前屈/后伸、侧屈及旋转几种状态下的运动情况,了解其运动特性。通过与以往的研究结果比较,试验结果基本符合或趋势基本一致。结果提示,颈椎间盘置换后能基本保证下颈椎运动稳定性。     

Bryan颈人工椎间盘置换术失败原因分析

目的 对Bryan颈人工椎间盘置换术治疗颈椎病的失败原因进行分析.方法 2004年10月至2007年10月,采用Bryan颈人工椎间盘对48例颈椎病患者的56个椎间盘进行治疗,其中单节段40例,双节段8例.术后随访2～38个月,平均18个月.手术失败4例,男1例,女3例;年龄分别为42、51、40、49岁.患者均为经6周的保守治疗无效后行Bryan颈人工椎间盘置换.结果 1例全麻后在用胶带固定患者体位的过程中造成对臂丛的过度牵拉,术后双上肢肌力下降到2～3级.1例术前CT及MRI显示C4～C6水平后纵韧带骨化,其中C4,5节段骨桥形成,向后方压迫脊髓;手术切除部分骨化后纵韧带,使之漂浮;术后患者症状无改善,并出现锥体束征阳性,复查CT及MRI示存在骨化后纵韧带压迫脊髓.1例术前MRI显示C4-5椎间盘突出,椎管前后径约为5 mm,C4,5水平脊髓变性;术中向外侧减压时致椎管内静脉破裂,出血影响术野;术后左侧肢体肌力下降至0级.1例术后1年发现假体后方异位骨化,但不影响关节活动.结论 臂丛损伤、减压不彻底、术中椎管内静脉出血和异位骨化可能是引起颈椎人工椎间盘置换术失败的主要原因.     

Bryan颈人工椎间盘置换术失败原因分析

Objective To analyze the failed Bryan cervical disc arthroplasty and to improve its re-sults. Methods From October 2004 to October 2007, 48 patients underwent Bryan cervical disc arthro-plasty. All patients were followed up 2 to 38 months(mean 18 months). Among them, 4 failed cases were an-alyzed, which include 1 male and 3 females, with the age of 42, 51, 40, 49 years. Results Case 1 reported the brachial plexus injury as the result of the patient's shoulders being overstretched while fixing his position during operation, the muscular power of both upper extremities declining to degree Ⅱ and Ⅲ upon operation completion, which was restored to degree 4 when discharged from hospital (45 days after operation). Case 2 reported the compression on the spinal cord as the result of failure to remove the ossification of posterior lon-gitudinal ligament (OPLL) which had been identified by the preoperative CT; the patient complained of no release of symptoms after the operation and postoperative CT showed that compression still existed. Case 3 reported incomplete spinal cord injury caused by massive bleeding during decompression, a function of ex-tremely small vertebral canal anteroposterior diameter (5 mm shown in preoperative MRI); the muscular pow-er of left extremity dropped to degree 0 upon operation completion; the patient could walk with crutch 10 days after operation. Case 4 reported'heterotopic ossification (OP) which occurred 1 year after operation and became deteriorated 2 years later, but did not affect the motion of prosthesis. Conclusion Bryan disc arthroplasty is being extensively used as an effective procedure for decompression and reconstruction of the cervical disc. Excellent clinical results are related to strict selection of indications, perioperative manage-ment, and the experience and surgical technique of the surgeon are also important to the final outcome.     

经胸腔前路内固定治疗胸椎爆裂骨折

胸腰椎后路内固定如 :Ｈａｒｒｉｎｇｔｏｎ、Ｌｕｑｕｅ及椎弓根系统已在临床广泛应用 ,在许多脊柱疾病的治疗中发挥重要作用 ,然而 ,对于大多数胸椎爆裂骨折、胸椎肿瘤、结核等 ,当后路手术难以有效解除压迫或清除病灶时 ,前路进行手术并同时内固定则具有重要意义。本文总结我院 2 0 0 0年 1月～ 2 0 0 1年 3月间经胸腔前路内固定治疗爆裂骨折 9例临床治疗结果 ,试对胸椎骨折前路内固定的特点、应用指征及临床价值加以探讨。1　临床资料1.1　一般资料　本组 9例 ,男 6例 ,女 3例 ;年龄 2 8～ 5 4岁 ,平均 3 5岁。 9例均有不同程度神经损伤…     

膝关节色素沉着绒毛结节性滑膜炎(附11例报告)(摘要)

作者从1985～1995年收治膝关节色素沉着绒毛结节性滑膜炎11例,结合文献进行讨论。 本组患者,男5例,女6例。年龄8～55岁,平均年龄28.3岁。病程最短者3个月,最长者5年。左膝4例,右膝7例。8例膝部有外伤史。患者均表现膝关节肿胀,关节活动障碍。膝关节周围可扪及大小不等的结节或包块,股四头肌不同程度萎缩;4例行关节穿刺,抽出棕黄色、黄色或血性关节液。所有患者血常规均正常,仅1例血沉加快高达65mm/h。X线检查:11例均显示不同程度的关节囊肿胀,侧位片部分病例可显示出单个或多个密度增高的圆形、椭圆形阴影,2例表现膝关节轻度增生、退变。7例术前行关节镜检查,镜下可直视到滑膜组织肥厚、增生呈结节状,滑膜血管充血,颜色呈黄褐或深褐色,以髌上囊处最为典型,关节腔可有陈旧积血或褐色积液。     

严重胸椎间盘突出钙化嵌入脊髓一例报告

患者，女，47岁。因右下肢麻木逐渐加重2.5年，伴左下肢无力，行走困难3个月就诊，上述症状于活动后加重，卧床休息后减轻，无明显外伤史。查体示右侧腹股沟以下感觉减退，T0.10部位有压痛、叩击痛，神经放射痛不明显；左下肢肌力4级，右下肢正常；双侧膝腱反射，跟腿反射亢进，     

经椎间孔腰椎椎体间融合术的应用与发展

随着人口老龄化,腰椎退行性疾病已经成为脊柱外科的主要关注点之一。虽然绝大多数的腰椎退行性疾病症状均可通过保守治疗来缓解,但是仍有部分症状较为严重及长期保守治疗无效的患者需要通过手术干预治疗。腰椎融合术目前已有约70年的发展史,对于腰椎退行性疾病,其已经被证明是一种有效和主要的治疗手段[1]。目前主要的腰椎融合术式有前路腰椎融合术(anterior lumbar interbody fusion,ALIF)、后路腰椎融合术(posterior lumbar interbody fusion,PLIF)、腰椎后外侧融合术(posterolateral