皮节体感诱发电位在腰椎间盘突出症中的诊断作用  

Clinical Application of Dermatomal Somatosensory Evoked Potential to Cases of Lumbosacral DiscHerniation

作　　者：何爱珊[1] 李佛保[1] 陈裕光[1] 万勇[1] 盛璞义[1] 

机构地区：[1]中山医科大学附属第一医院骨科

出　　处：《中华骨科杂志》1999年第2期83-85,共3页Chinese Journal of Orthopaedics

基　　金：1995年广东省科委重点科技攻关科研基金

摘　　要：目的探讨皮节体感诱发电位（ＤＳＥＰ）在腰椎间盘突出症中的诊断作用。方法对３９例有Ｌ５和Ｓ１神经根损害表现的腰椎间盘突出症的患者进行胫后神经体感诱发电位（ＳＥＰ）和Ｌ５Ｓ１ＤＳＥＰ检查，测定其Ｎ４０的峰潜伏期。结果胫后神经ＳＥＰ检测的异常率为３８．５％，其中多水平突出的异常率明显高于单水平突出的异常率（Ｐ＝０．００８）；而Ｌ５Ｓ１ＤＳＥＰ检测的异常率达８５．７％，比胫后神经ＳＥＰ检测的异常率明显增高（Ｐ＜０．０００１）。在Ｌ４－５椎间盘突出中，以Ｌ５　ＤＳＥＰ异常为主：在Ｌ５Ｓ１椎间盘突出中，以Ｓ１ＤＳＥＰ异常为主。结论Ｌ５Ｓ１　ＤＳＥＰ检查是诊断腰椎间盘突出症较敏感和可靠的检测方法，其结果与神经根受累水平相一致，可协助判断突出水平。Objective To evaluate the role of dermatomal somatosensory evoked potential (DSEP)exarnination in the diagnosis of lumbosacral disc herniation(LDH) . Methods Somatosensory evoked potential(SEP) from posterior tibial nerve, L5 and S1 derniatomes was recorded from 39 patients with radiculopathycansed by LDH. Results The SEP from posterior tibial nerve was abnormal in 15 cases (38.5%) and theSEP from L5 and or S1 dermatome was abnormal in 34 (87. 2%) (P<0. 0001) . The abnormality of SEP fromL5 dermatome was detected mainly in patients with L4-5 LDH, but the abnormality of SEP from S1 dermatomewas demonstrated mainly in patients with L5 S1 LDH. Conclusion The SEP from L5 and/or S1 dermatomewas a sensitive method for the diagnosis of the level of the disc herniation.

关 键 词：诱发电位 椎间盘突出 腰椎 皮节体 DSEP 

分 类 号：R681.530.4[医药卫生—骨科学]