The anterior abdominal wall is bounded above by the costal margins and the xiphoid process of the sternum; only the costal cartilages of ribs 7, 8, 9 and 10 take part in this boundary, for the 11th and the 12th ribs do not reach the margin. It is bounded below and on each side by the portion of the iliac crest lying between the iliac tubercle and the anterior superior iliac spine, by the inguinal ligament, the pubic crests and the upper end of the pubic symphysis. The xiphoid process lies at the bottom of the depression between the two 7th costal cartilages; its edges and tip afford attachment for the aponeurosis of the transversus abdominis muscle. Since it is painful and at times difficult to palpate the xiphoid, the lower end of the body of the sternum serves as a preferable landmark.
KeywordsSpermatic Cord Rectus Sheath Umbilical Hernia Inguinal Ligament Transversus Abdominis
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