Localized in the prone position, on pars sacralis, 2 cun above the tip of tailbone, in the introcession between coccygeal eminences. (Fig.97)
Regional Anatomy
Skin--subcutaneous tissue--ligament supraspinale. The distribution of the branches of the second and the third rami posteriors nervorum sacralium, and the concomitant arteries and veins.
