Anloague Philip A, Huijbregts Peter
J Man Manip Ther. 2009;17(4):e107-14. doi: 10.1179/106698109791352201.
This study used dissection of 34 lumbar plexes to look at the prevalence of anatomical variations in the lumbar plexus and the six peripheral branches from the origin at the ventral roots of (T12) L1-L4 to the exit from the pelvic cavity. Prevalence of anatomical variation in the individual nerves ranged from 8.8-47.1% with a mean prevalence of 20.1%. Anatomical variations included absence of the iliohypogastric nerve, an early split of the genitofemoral nerve into genital and femoral branches, an aberrant segmental origin for the lateral femoral cutaneous nerve, bifurcation of the lateral femoral nerve prior to exiting the pelvic cavity, bifurcation of the femoral nerve into two to three slips separated by psoas major muscle fibers, the presence of a single anterior femoral cutaneous nerve rather than the normal presentation of two separate anterior femoral cutaneous branches, and the presence of an accessory obturator nerve. Comparison with relevant research literature showed a wide variation in reported prevalence of the anatomical variations noted in this study. Clinical implications and directions for future research are proposed.
本研究对34个腰丛进行解剖，以观察腰丛及其从（T12）L1 - L4腹侧神经根起始至盆腔出口的六条外周分支的解剖变异发生率。各神经解剖变异的发生率在8.8% - 47.1%之间，平均发生率为20.1%。解剖变异包括髂腹下神经缺如、生殖股神经早期分为生殖支和股支、股外侧皮神经节段性异常起源、股外侧神经在盆腔出口前分叉、股神经在腰大肌纤维分隔下分为两至三条束支、存在单一的股前皮神经而非正常的两条独立股前皮支以及存在闭孔副神经。与相关研究文献的比较显示，本研究中所记录的解剖变异的报告发生率存在很大差异。文中还提出了临床意义及未来研究方向。
