脊髓肿瘤漏诊分析(8例报告)

本院2003年6月～2005年10月共收治腰椎间盘突出患者213例，其中合并有脊髓肿瘤者8例。现总结分析如下。     

鞘内注射吗啡加可乐定对切口痛大鼠脊髓背角蛋白激酶A催化亚单位表达的影响

Objective To observe the effect of intrathecal clonidine plus morphine on expression of protein kinase A (PKA) catalytic subunit in the spinal dorsal horn in a rat model of incisional pain. Methods Eighty male Sprague-Dawley rats were divided randomly into five groups: sham group, control group, pre-incisional morphine 2.5 μg group, pro-incisional clonidine 5 μg group and preincisional morphine 2.5 μg plus clonidine 5 lag group (n=16). lntrathecal catheter and the model of incisional pain were pro-duced according to Yaksh and Brennan's described method respectively. Changes of pain behavior were assessed by mechanical with-drawal threshold (MWT) and thermal withdrawal latency(TWL). The expressions of PKA catalytic subunit in the spinal dorsal horn were assessed by immunohistochemical method and western blotting analysis. Results Compared with sham group, MWT and TWL in control group were decreased significantly at 2 h after incision (P<0.01) and the number of positive cells and protein expression of PKA catalytic subunit in the spinal dorsal horn were increased significantly in control group (P<0.01). Compared with control group, MWT and TWL in pre-incision morphine 2 μg plus clonidine 5 lag group were increased significantly at 2 h after incision (P<0.01) and the number of positive cells and protein expression of PKA catalytic subunit in the spinal dorsal horn were decreased significantly in pre-incision morphine 2 μg plus clonidine 5 μg group (P<0.01). However, MWT, TWL and the number of positive cells and pro-tein expression of PKA catalytic subunit in the spinal dorsal horn changed with no statistical significance in pre-incisional morphine 2.5 μg group and pre-incisional clonidine 5 μg group compared with control group. Conclusion lntrathecal clonidine significantly enhances the antinociceptive effect of intrathecal morphine in a rat model of incisional pain, which might be associated with inhibi-tion of the increased expression of PKA catalytic subunit in spinal cord.     

脊柱后路减压治疗胸腰段骨折脱位合并脊髓损伤术式选择

目的研究两种不同脊柱后路减压方法治疗胸腰段骨折脱位合并脊髓损伤的手术治疗效果。方法回顾分析本院1996年3月～2002年6月收治的胸腰段骨折脱位并脊髓损伤患者76例，按不同减压方法将其分为两组：切除一侧或两侧椎板、椎弓根或部分关节突行侧前方环状减压AF内固定者40例，为直接减压组；体位复位结合AF器械矫正复位36例，为间接减压组。统计学分析，两组资料具有可比性。对术后神经功能恢复情况，按ASIA神经功能评定标准进行评定。中晚期并发症，根据是否有腰背痛，下肢根性痛、麻木无力，两便功能障碍进行评定。生活能力按FIM评定。结果两组病例获6个月～5年随访，结果表明，术前脊髓完全性损伤，术后均无恢复；术前脊髓不完全性损伤，术后两组间比较差异无显著性。中晚期并发症发生，直接减压组高于间接减压组；术后生活自理能力，间接减压组好于直接减压组。结论间接减压手术方法治疗胸腰段骨折脱位合并脊髓损伤不失为一种早期治疗的首选方法。     

选择性腰升静泳造影与碘水脊髓造影对腰椎间盘突出的诊断价值

52例疑为L_(4-5)或L_5～S_1椎间盘突出的患者,同时行选择性腰升静脉造影(SALV)和碘水脊髓造影.43例手术和病理证实46个椎间盘突出.本文对两种检查方法诊断准确性,适应性和并发症进行了比较.临床疑诊为腰椎间盘突出者,脊髓造影可疑或正常,SALV是有诊断价值的.     

椎管减压AF系统固定植骨术治疗胸腰段骨折脱位脊髓损伤的临床研究

近二十年来，在胸腰椎骨折治疗方面出现许多技术：如：椎管减压加卢格氏棒、CD、DISK技术等。近年来，由邹德威教授研制成功的脊柱三维复位固定系统(tri-axes fixalort-AF)，具有三维可调整功能，短节固定，结构简单，调节方便，准确有效，使植入手术大为简化。减少了副损伤的发生，有利于损伤脊髓的恢复，促进下肢功能的恢复，     

神经根修复时间对脊髓前角运动神经元存活的影响

目的评价神经根修复时间对脊髓前角运动神经元存活的影响。方法采用大鼠颈。神经根性撕脱伤和椎孔外切断实验动物模型，根据动物神经根损伤类型和损伤后修复时间分为A、B、C、D四组，每组16只。A、C组分别将撕脱与切断的神经根即刻回植入脊髓和于椎孔外直接吻合，B、D组将撕脱和椎孔外切断的神经根旷置3周后再重复上述手术。分别于神经根撕脱和椎孔外切断术后3周、3个月、6个月取材。应用组织病理活检、免疫组化技术及神经示踪技术，对神经中枢及吻合口下段神经干检查，观察脊髓病理改变和轴突再生情况，进行A、B组和C、D组间对比。结果臂丛神经根性损伤即刻修复组脊髓前角运动神经元和尼氏体数目、形态、减少程度及周围再生神经纤维数目、发育程度均优于损伤后3周修复组。结论神经根早期修复对脊髓前角运动神经元有明确的保护作用，对外周神经再生有促进作用。     

脊髓损伤的低场强MRI诊断

脊髓损伤是一种严重的创伤,致残率高,需用MRI才能确诊.本文收集了经MR检查的脊髓损伤76例,探讨脊髓损伤的低场强MRI表现及临床应用.     

Z-plate前路钢板内固定治疗胸腰椎爆裂性骨折

胸腰椎严重爆裂性骨折常累及三柱,以中柱破坏为重.致压物常来自脊髓前方,后路手术对脊髓前方压迫解除常不彻底,往往需前路减压.自2000年10月以来,采用前路椎体次全切除减压、复位、植骨融合,Z-plate前路钢板内固定治疗胸腰椎爆裂性骨折23例,取得了满意效果.     

Spinal arteriography: a primer

Spinal arteriography is an esoteric procedure that is seldom nerformed by peripheral interventionalists. This presentation is intended to outline some of the essential points that the interventionalist performing the procedure should be aware of,especially about spinal dural arierioyenous fistulae (SDAVF).