Nathan H, Weizenbluth M, Halperin N
Int Orthop. 1982;6(3):197-202. doi: 10.1007/BF00267730.
The lumbo-sacral ligament (LSL) was studied in 42 specimens. It extends from the L5 vertebra to the ala of the sacrum and forms, with the structures to which it is attached, an osteofibrotic tunnel as an extension of the intervertebral foramen. The 5th lumbar nerve root passes through the tunnel over the ala of the sacrum and behind the LSL. A branch of the 4th lumbar nerve root passes in front of the LSL to join the 5th below the ligament to form the lumbo-sacral trunk. The sympathetic ramus communicans to the L5 root always penetrates the LSL at its superior border and reaches the nerve inside the tunnel. Branches of the ilio-lumbar vessels accompany the L5 root. Large osteophytes on the inferior border of L5 and tightness of the LSL were often found to cause entrapment and compression of the L5 nerve root against the ala of the sacrum.
对42个标本的腰骶韧带（LSL）进行了研究。它从第5腰椎延伸至骶骨翼，并与其附着的结构一起形成一个骨纤维性隧道，作为椎间孔的延伸。第5腰神经根穿过骶骨翼上方且在腰骶韧带后方的隧道。第4腰神经根的一个分支在腰骶韧带前方走行，在韧带下方与第5腰神经根会合形成腰骶干。与第5腰神经根相连的交感神经交通支总是在其 superior border（此处原文有误，推测是superior margin）穿透腰骶韧带，到达隧道内的神经。髂腰血管的分支伴随第5腰神经根走行。常发现第5腰椎下缘的大骨赘和腰骶韧带紧张会导致第5腰神经根在骶骨翼处受压和卡压。
