Bogduk N, Long D M
J Neurosurg. 1979 Aug;51(2):172-7. doi: 10.3171/jns.1979.51.2.0172.
Disections of the dorsal rami of L1--5 were performed in human cadavers, and the course of the dorsal rami, their branches, and the innervation of the zygapophyseal joints in the lumbar region were specifically studied. At the L-1 through L-4 levels, the dorsal rami divide into medial and lateral branches within the intertransverse ligaments. Each medial branch runs across the root of the adjacent superior articular process. At the caudal edge of the process, the branch turns medially beneath the mammillo-accessory ligament. Beneath the mammillo-accessory ligament, medial branches occur that innervate the adjacent zygapophyseal joint, and distal zygapophyseal branches arise at the laminar level to innervate the next lower joint. The L-5 dorsal ramus runs along a groove between the ala of the sacrum and its superior articular process. A the caudal edge of the articular process, the ramus divides into medial and lateral branches, and the medial branch supplies the L5--S1 articulation.
在人体尸体上对L1 - 5背侧支进行解剖，并专门研究了背侧支的走行、其分支以及腰椎区域关节突关节的神经支配。在L1至L4水平，背侧支在横突间韧带内分为内侧支和外侧支。每个内侧支跨过相邻上位关节突的根部。在关节突的尾缘，该分支在乳突副韧带下方转向内侧。在乳突副韧带下方，出现支配相邻关节突关节的内侧支，并且在椎板水平发出远端关节突支以支配下一个更低的关节。L5背侧支沿骶骨翼与其上位关节突之间的沟走行。在关节突的尾缘，该分支分为内侧支和外侧支，内侧支供应L5 - S1关节。
