The posterior branch of the obturator artery follows the posterior margin of the foramen and turns forward on the inferior ramus of the ischium

Inferior ramus of the ischium

The Inferior Ramus of the ischium is the thin, flattened part of the ischium, which ascends from the superior ramus, and joins the inferior ramus of the pubis—the junction being indicated in the adult by a raised line....

, where it anastomoses with the anterior branch

Anterior branch of the obturator artery

The anterior branch of the obturator artery runs forward on the outer surface of the obturator membrane and then curves downward along the anterior margin of the foramen....

.

It gives twigs to the muscles attached to the ischial tuberosity and anastomoses with the inferior gluteal

Inferior gluteal artery

The inferior gluteal artery , the larger of the two terminal branches of the anterior trunk of the internal iliac artery, is distributed chiefly to the buttock and back of the thigh....

.

It also supplies an articular branch which enters the hip-joint through the acetabular notch

Acetabular notch

The acetabulum presents below a deep notch, the acetabular notch, which is continuous with a circular non-articular depression, the acetabular fossa, at the bottom of the cavity: this depression is perforated by numerous apertures, and lodges a mass of fat....

, ramifies in the fat at the bottom of the acetabulum

Acetabulum

The acetabulum is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint.-Structure:...

 and sends a twig along the ligamentum teres

Ligament of head of femur

The ligament of the head of the femur , or the round ligament of the femur , is a triangular, somewhat flattened band implanted by its apex into the antero-superior part of the fovea capitis femoris; its base is attached by two bands, one into either side of the acetabular notch, and between these...

 to the head of the femur.