The posterior branch of the artery supplies the sacrospinalis
muscle and skin of the back.
It is an inverted triangle the base of which is formed by the 12th rib and the lower edge of serratus posterior inferior muscle, anteriorly bounded by the posterior border of internal oblique muscle, posteriorly bounded by the anterior border of sacrospinalis
Separation of fibers of posterior layer of lumbodorsal fascia with herniation of the sacrospinalis
muscle as a cause," The American Journal of Surgery, vol.
The boundaries of the superior triangle are the posterior border of the internal oblique muscle anteriorly, the anterior border of the sacrospinalis
posteriorly, the twelfth rib, and the serratus posterior inferior muscle superiorly.
B, initial description by Wiltse of the paraspinal sacrospinalissplitting approach to the lumbar spine showing the plane between the longissimus part and the multifidus part of the sacrospinalis
The Oswestry Disability Index (ODI) scores, Visual Analog Scale (VAS) scores, and sacrospinalis
muscle damage evaluation indicators before operation and 3, 12 months postoperation were compared.
After the removal of the balloon, 2 working ports, 11 mm and 5 mm in size, were inserted under finger guidance, one in the renal angle just below the 12th rib at the lateral border of the sacrospinalis
muscle, and the other was inserted 11 mm above and anterior to the anterior superior iliac spine.
This has also been my experience with the needle, and it stands to reason--no stimulus would be expected with injection into the CSF or epidural vein, or other "soft spot" like the sacrospinalis
Subcutaneous lumbar nodules are different from myofascial trigger points, although their locations may be similar. The nodules are said to consist of adipose tissue separated by fibrous septa, surrounded by a firm fibrous capsule.[2,3] They are distributed inferiorly along the iliac crests, over and around the sacroiliac joints, and at the edges of the sacrospinalis
muscle (Figure 3).
They concluded that MI TLIF patients have less sacrospinalis
muscle injury, resulting in early functional recovery and superior short-term treatment effects.
Some scholars thought the scar tissue around dura mater of the spinal cord was originated from the posterior injured sacrospinalis
and the anterior injured anulus fibrosus as well as the posterior longitudinal ligament.