摘要
采用内窥镜系统经椎间孔对6个新鲜年轻标本的腰椎管内结构进行静态和动态的实验观察,并行CT和直视对照.腰椎屈曲位时,椎间盘后深拉伸,前移;黄韧带张力增高,因而椎管扩大.腰椎后伸位时,椎间盘后移向椎管内膨隆;椎板间和棘突基底部黄韧带仍保持一定张力,未见明显地向腹侧突起(?)椎管中央部分和后方部分无明显改变,而椎管的侧方部分,由于小关节的相互移动,松弛的关节囊带动被覆其内侧和腹侧的发达的黄韧带(?)张力,明显地向腹侧和内侧移动,与后凸的椎间盘后份相对形成侧隐窝的钳夹性狭窄,此种特征性改变在L_4L_5最明显.提示临床上应加强对椎管侧方部分狭窄的诊断和侧隐窝减压的治疗的重视.
Endoscope was used to observe dynamic changes of lumbar canal through intervertebral foramen, combined with CT and anaiomy. In ilexion, the posterior portion of the annulus fibrosus is stretched and the ligamentum flava stressed with the sagittal dimension of the vetebral canal increasing. In extension, the annulus fibrous bulges posteriorly; the ligamentum in the interlaminar space and the base of spinous process still maintain their stress without obvious bulge into the vetebrai canal, so the central and posterior portion of the vetebral canal decrease slightly. On the other hand, the ligamentum flava-joint capsule complex loose and bulge medialy and anteriorly as the movement of the facet joints, the sagittal dimension of the lateral portion of the vertebral canal decrease markedly. These characteristic dynamic changes are most obvious in L45 Therefore, more attention should be paid to the diagnosis and surgical treatment of the lateral portion stenosis of the lumbar canal.
出处
《解剖学杂志》
CAS
CSCD
北大核心
1995年第4期295-299,共5页
Chinese Journal of Anatomy
关键词
腰椎
椎管
解剖结构
内窥镜检
vertebral canal
lumbar vertebrae
ligamenta flava
lateral recess
