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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.
The endoscopic system of intervertebral foraminotomy in 6 fresh specimens of the lumbar spinal structure static and dynamic experimental observation, parallel CT and direct vision control.Lumbar flexion, the disc after the deep stretch, forward; ligamentum flavum Tension increased, so the spinal canal expansion.Lesus posterior extension, the disc after the shift to the spinal canal bulging; lamina and spinous process at the base of the ligamentum flavum remains a certain tension, no significant protrusion to the ventral (?) Vertebral The central portion and the posterior portion of the tube did not change significantly, while the lateral portion of the spinal canal, due to the mutual movement of the facet joints, relax the joint capsule to drive its medial and ventral flaccid ligaments (?) Tension, clearly to the abdomen Lateral and medial movement, and the kyphosis of the posterior intervertebral disc relative to the formation of lateral recess patella stenosis, such a characteristic change in L_4L_5 most obvious .Clinical should be strengthened on the diagnosis of lateral stenosis and lateral occlusion Treatment of decompression of the focus.