摘要
在13具成人尸体和56块成人骶骨上对腰神经后支作了观察。腰神经后支向后穿过骨纤维孔分为内、中、外3支,分别支配多裂肌、最长肌、髂肋肌。中间支又分为升支、横支、斜支和降支,节段性吻合主要见于 L_(1-4)水平。骨纤维孔在 L_(1-3)为梭型,L_5为椭圆型,L_4为混合型。骶翼间沟分为浅沟型、狭谷型和过渡型。骨纤维孔和骶翼间沟可能是嵌压腰神经后支而导致腰背痛的潜在因素。
The posterior rami of the lumbar spinal nerves were observed in 13 adult cadavers and 56 adult sacra.The posterior rami ran posteriorly and passed through the osteo-fibrous foramen and formed medial,intermediate,and lateral branches which innervated multifidus,longissmus,and iliocostalis respectively.The intermidiate branches further divided into ascending,transverse,oblique,and descending subbranches.Nerve anastomosis was mostly in L_(1-4) segments.The shape of the osteo-fibrous foramen was shuttle.like in L_(1-3),ellipsoidal in L_5 and mixed in L_4 segments.The sacro-ala groove was divided into groove-type,gorge-type,and transition-type.The osteo-fibrous foramen and the sacro-ala groove might be the potential factors pressing the posterior rami of lumbar spinal nerves to cause low-back pain.
出处
《青岛医学院学报》
1989年第2期122-125,共4页
Acta Academiae Medicinae Qingdao Universitatis
关键词
腰骶部
神经纤维
神经解剖学
Lumbosacral region
Nerve fibers
Neuroanatomy
