Variations in the course of the superior gluteal artery in relation to the lumbosacral plexus

Anatomic characterisation of the parietal branches arising from the internal iliac artery in the foetal pig (Sus scrofa domestica)

“…2, Table 2). We suggest that this observation implies that the course taken by the SG relates directly to the observed segmental variations in the plexus including the lumbosacral trunk; this observation reflects similar findings from human cadaveric dissections [4].…”

“…As but one example, Honma et al [17] examined the formation of an arterial ring in the human pelvic artery and suggested that specific ramifications of the parietal branches were associated with the site of disappearance of the arterial ring. Furthermore, previous study examined variations in the course taken by the SG, including its relationship with the lumbosacral plexus; we found that the route taken by the SG varied in accordance with the segmental variations of the lumbosacral plexus [4]. However, not all anatomical variations among the parietal branches are clearly understood; for example, the branching patterns and course variations observed among the IG and Ob have not been fully considered.…”

The phenotypic morphology of human lumbar plexus roots associated with changes in the thoracolumbar vertebral count and trade-off

“…This www.nature.com/scientificreports www.nature.com/scientificreports/ has been used as a pattern formation model for chick limbs. A similar viewpoint has been applied in some macroscopic anatomical studies of humans, including ones that have investigated the lumbosacral plexus and the position of the sacroiliac joint 29 , the brachial plexus and the points where it penetrates the axillary artery branches 42,43 , and the composition of the sacral plexus and the penetration points of the internal iliac artery branches 44 . Interestingly, the positions of the lumbosacral and pudendal plexuses relative to the sacrum have been investigated and compared in various vertebrates by counting presacral vertebrae from the sacrum reversely as presacral numbers such as first presacral vertebra as last lumbar vertebra [45][46][47][48] .…”

The superior gluteal artery and the posterior division of the internal iliac artery: an analysis of their complete anatomy

“…The anatomical aspects of the SGA have been discussed in the past. The spatial relationship between the said artery and lumbosacral plexus was discussed by Anetai et al [1]. In the study, the SGA pathways and variations were presented as a classification system consisting of four groups.…”

“…The SGA was found to pass between the nerve trunks of L4 and L5, L5 and S1, S1 and S2, and even between the obturator nerve and the lumbosacral trunk. However, it has been stated that the most frequent course of the SGA is between L5 and S1, with a prevalence ranging between 60-80% [1]. This relationship is particularly important in the process of S1 sacroiliac screw placement.…”