Inferior gluteal veins
Inferior gluteal veins start at the top part of the back side of the thigh. It is also referred to as the vena comitans or the sciatica veins of the inferior gluteal artery. The vena comitans is the Latin expression that means the accompanying vein. It is usually paired with other veins and is located on the sides of an artery. They are usually found with smaller arteries as larger arteries typically do not have venae comitantes. The inferior gluteal artery is mostly distributed to the back of the thigh and the buttock. It is also referred to as the sciatica artery and is one of two terminal branches of the internal iliac artery's anterior trunk. The inferior gluteal veins enter into the pelvis by coming through the lower portion of the greater sciatic foramen, which is the pelvis' major opening. After entering into the pelvis, they form a single stem that opens up into the hypogastric vein's lower portion. The hypogastric vein is another term used for the internal iliac vein.
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In Depth: Inferior gluteal veins