The artery that supplies blood to the femoral head via the ligamentum teres is the obturator artery. The obturator artery is a branch of the internal iliac artery, which is one of the main arteries that supplies blood to the pelvis and lower limbs.
The obturator artery runs through the obturator foramen and gives off several branches, including the acetabular branch, which supplies blood to the hip joint, and the ligamentum teres artery, which runs through the ligamentum teres and supplies blood to the femoral head. The ligamentum teres is a ligament that connects the femoral head to the acetabulum (hip socket) and helps to stabilize the hip joint.
The blood supply to the femoral head is important for maintaining the health and function of the hip joint. Injuries or conditions that disrupt the blood supply to the femoral head can lead to avascular necrosis, which is a condition in which the bone tissue dies due to a lack of blood supply.