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The anterior superior iliac spine refers to the anterior extremity of the iliac crest of the pelvis.This is a key surface landmark, and easily palpated.It provides attachment for the inguinal ligament, the sartorius muscle, [1] [4] and the tensor fasciae latae muscle.
The inguinal ligament runs from the anterior superior iliac crest of the ilium to the pubic tubercle of the pubic bone. It is formed by the external abdominal oblique aponeurosis and is continuous with the fascia lata of the thigh. There is some dispute over the attachments. [3] Structures that pass deep to the inguinal ligament include:
The sartorius muscle originates from the anterior superior iliac spine, [4] and part of the notch between the anterior superior iliac spine and anterior inferior iliac spine. It runs obliquely across the upper and anterior part of the thigh in an inferomedial direction. [3] It passes behind the medial condyle of the femur to end in a tendon.
The ilium is a bone of the pelvic girdle with four bony projections, each serving as attachment points for muscles and ligaments: Anterior superior iliac spine; Anterior inferior iliac spine; Posterior superior iliac spine; Posterior inferior iliac spine
Below, it has the following attachments: posteriorly, to the whole length of the iliac crest, between the attachments of the transverse abdominal and Iliacus; between the anterior superior iliac spine and the femoral vessels it is connected to the posterior margin of the inguinal ligament, and is there continuous with the iliac fascia. [2]
Below the notch is the anterior inferior iliac spine, which ends in the upper lip of the acetabulum; it gives attachment to the straight tendon of the rectus femoris and to the iliofemoral ligament of the hip-joint. Medial to the anterior inferior spine is a broad, shallow groove, over which the iliacus and psoas major pass.
Xiphoid process, outer lip of the iliac crest, pubic crest, pubic tubercle, linea alba, inguinal ligament, anterior superior iliac spine (ASIS) Nerve: Thoraco-abdominal nerves (T7-11) and subcostal nerve (T12) Actions: Flexion of the torso and contralateral rotation of torso: Identifiers; Latin: musculus obliquus externus abdominis: TA98: A04.5 ...
It is joined with that of the opposite muscle along the middle line, and covers the whole of the front of the abdomen; above, it is covered by and gives origin to the lower fibers of the pectoralis major; below, its fibers are closely aggregated together, and extend obliquely across from the anterior superior iliac spine to the pubic tubercle ...