Variation of the Lateral Sacral Artery in relation to Sciatic Neuropathy

Table 1

Origin of the lateral sacral artery.

Origin	Incidence
Anterior trunk of the internal iliac artery	1.0%
Dorsomedial aspect of the internal iliac artery	3.7%
Posterior trunk of the internal iliac artery	79.1%
Superior gluteal artery	16.8%
Inferior gluteal artery	5.4%
Internal pudendal artery	0.3%
Persistent sciatic artery	8.8%
Congenital absence	0.3%

The lateral sacral artery commonly arose from the posterior trunk of the internal iliac artery. Occasionally, it arose from different arteries. Observations are based on 342 specimens.