Artery Sacrococcygeal

The sacral artery (arteria sacra) is a branch of the internal iliac artery and goes down to the coccyx. It emerges from the afora of the hypogastric plexus, therefore, muscular branches already depart from the artery, innervating the muscles of the perineum and the distal muscles of the lower extremities and perineum. Occurs in 38% of cases. In the pelvic cavity, the artery lies in the gap between the sacrum and coccyx. Between the uterus and the rectum, the artery deviates slightly anteriorly, pierces the greater sciatic muscle, wrapping its ends around the medial border of the rectal ampulla and branches of the anal sphincter. At the level of the lower edge of the anterior sacral spine, the artery crosses the bulb of the lumbosacral joint in front in the transverse direction and at the level of the upper third of the sacrum enters the thickness of the sacrotuberous ligament, in front of which and on the sides of it it lies freely at first, then, as it approaches the coccyx - plunging more and more into the thickness of the fiber adjacent to these structures. Approximately in the middle of the sacrum, the artery enters the sacrospinous or uterosacral ligament and from there, reaching the concave edge of the coccyx, enters the body of its sacral part. Perforated by the nerve fibers of the anal canal, the artery often disintegrates next to