Runxun Ma1, Zhiyang Zheng1, Xinying Zhou1, Weijia Zhu1, Junjie Chen1, Rusen Zhang1, Zexian Liu1, Yejie Xu1, Maoqing Fu2, Zezheng Liu1, Qinghao Zhao3, Qingchu Li4. 1. Guangdong Province, Department of Orthopedics, Academy of Orthopedics, The Third Affiliated Hospital of Southern Medical University, No. 183, Zhongshan Rd West, Guangzhou, 510630, China. 2. Department of Spine Surgery, Nanhai Hospital, Southern Medical University, Nanhai District, 528244, Foshan, Guangdong, People's Republic of China. 3. Guangdong Province, Department of Orthopedics, Academy of Orthopedics, The Third Affiliated Hospital of Southern Medical University, No. 183, Zhongshan Rd West, Guangzhou, 510630, China. qinghao.z@foxmail.com. 4. Guangdong Province, Department of Orthopedics, Academy of Orthopedics, The Third Affiliated Hospital of Southern Medical University, No. 183, Zhongshan Rd West, Guangzhou, 510630, China. liqingchu12@qq.com.
Abstract
Pseudoaneurysms of the lumbar arteries following transforaminal lumbar interbody fusion (TLIF) are rare postoperative complications that usually occur around the transverse process. However, there are few detailed descriptions of the transverse branch and other branches of the dorsal branches at the L1-L4 disks. STUDY DESIGN: Ten adult embalmed cadavers were anatomically studied. OBJECTIVES: The purposes of the study were to describe the vascular distribution of the dorsal branches, especially the transverse branches, at the L1-L4 levels and provide information useful for TLIF. METHODS: Ten embalmed cadavers studied after their arterial systems were injected with red latex. The quantity, origin, pathway, distribution range and diameter of the branches were recorded and photographed. RESULTS: The transverse branch appeared in all 80 intervertebral foramina. The transverse branch was divided into 2 types: In type 1, the arteries divided into superior branches and inferior branches; the arteries in type 2 divided into 3 branches (superior, intermedius and inferior branches). CONCLUSIONS: The transverse branches of the dorsal arteries are common structures from L1 to L4, and 2 types of transverse branches were found. A thorough understanding of the dorsal branches, especially the transverse branches of the lumbar artery, may be very important for reducing both intraoperative bleeding during the surgery and the occurrence of pseudoaneurysms after transforaminal lumbar interbody fusion.
Pseudoaneurysms of the lumbar arteries following transforaminal lumbar interbody fusion (TLIF) are rare postoperative complications that usually occur around the transverse process. However, there are few detailed descriptions of the transverse branch and other branches of the dorsal branches at the L1-L4 disks. STUDY DESIGN: Ten adult embalmed cadavers were anatomically studied. OBJECTIVES: The purposes of the study were to describe the vascular distribution of the dorsal branches, especially the transverse branches, at the L1-L4 levels and provide information useful for TLIF. METHODS: Ten embalmed cadavers studied after their arterial systems were injected with red latex. The quantity, origin, pathway, distribution range and diameter of the branches were recorded and photographed. RESULTS: The transverse branch appeared in all 80 intervertebral foramina. The transverse branch was divided into 2 types: In type 1, the arteries divided into superior branches and inferior branches; the arteries in type 2 divided into 3 branches (superior, intermedius and inferior branches). CONCLUSIONS: The transverse branches of the dorsal arteries are common structures from L1 to L4, and 2 types of transverse branches were found. A thorough understanding of the dorsal branches, especially the transverse branches of the lumbar artery, may be very important for reducing both intraoperative bleeding during the surgery and the occurrence of pseudoaneurysms after transforaminal lumbar interbody fusion.
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