Schmidt Cameron K, Iwanaga Joe, Yilmaz Emre, Wilson Charlotte, Oskouian Rod J, Tubbs R Shane
Clinical Anatomy, Seattle Science Foundation.
Seattle Science Foundation.
Cureus. 2017 Oct 30;9(10):e1809. doi: 10.7759/cureus.1809.
The lumbosacral trunk, typically comprised of part of the fourth lumbar ventral rami and the entirety of the fifth lumbar ventral rami, serves as a connection between the lumbar and sacral plexuses. Developmental differences underlie the variable relative contributions of L4 and L5 to the lumbosacral trunk. Herein, we report a rare case in which dissection of an adult male cadaver revealed no L4 contribution to the lumbosacral plexus. We discuss the surgical and clinical implications of such an anatomic variation.
腰骶干通常由第四腰神经前支的一部分和第五腰神经前支的全部组成，是腰丛和骶丛之间的连接结构。发育差异是L4和L5对腰骶干相对贡献变化的基础。在此，我们报告一例罕见病例，在对一具成年男性尸体进行解剖时发现，L4对腰骶丛没有贡献。我们讨论了这种解剖变异的手术和临床意义。
