摘要
目的 :探讨多节段颈椎椎板切除术后神经根病的解剖学基础及其发病机理。方法 :对 2 0具 (4 0侧 )成人固定标本的颈段脊髓、椎管及颈段神经根进行观察 ;其中 5具标本模拟颈椎椎板切除术 ,观察脊髓的反弹情况。结果 :颈神经脊髓附着端至椎间孔内侧缘距离平均为 8.5± 0 .3(3.5～ 11.0 )mm ,以C5、C6 最长 ;脊髓反弹紧贴椎管后壁时颈神经根移动平均为 1.2± 0 .5 (0～ 2 .0 )mm ,以C5、C6 神经根移位最大 ,而硬脊膜囊在椎间孔处对移动的脊神经根形成栓系。结论 :颈椎后路减压术后神经根病的发生最可能的原因是脊髓反弹引起神经根栓系卡压 。
Objective:To investigate anatomy basis and mechanism of radiculopathy after multilevel cervical laminectomy.Methods:Reviewing document,the relationship between cervical spinal cord and vertebral canal as well as dislocation of cervical spinal nerve roots after apinal cord expand were observed on 20 adult cadavers(40 sides).Results:The distance between spinal nerve roots attached to the intervertebral foramen was 8.5±0.3mm;C 5、C 6 were the most lengthy.The moving spinal nerve roots in intervertebral foramen were tethered by the spinal dura mater.Conclusion:The reason of radiculopathy after cervical laminectomy most probably is that spinal cord expands resulting spinal nerve roots tethered by the spinal dura mater.The take place of radiculopathy have relevance to the moving of spinal nerve roots.
出处
《解剖与临床》
2002年第4期143-144,共2页
Anatomy and Clinics
