Spigelian hernia Spigelian hernia A Spigelian hernia (or lateral ventral hernia) is a hernia through the Spigelian fascia, which is the aponeurotic layer between the rectus abdominis muscle medially, and the semilunar line laterally. These are generally interparietal hernias, meaning that they do not lie below the subcutaneous fat but penetrate between the muscles of the abdominal wall; therefore, there is often no notable swelling. Spigelian hernias are usually small and therefore risk of strangulation is high. Most occur on the right side. (4th–7th decade of life.) Compared to other types of hernias they are rare. Patients typically present with either an
Femoral vessel Femoral vessel The femoral vessels are those blood vessels passing through the femoral ring into the femoral canal thereby passing down the length of the thigh until behind the knee. These large vessel are the: Lymphatic vessels found in the thigh aren’t usually included in this collective noun. As the blood vessels pass along the thigh, they branch, with their main branches remaining closely associated, where they are still referred to collectively as femoral vessels. The adjective femoral, in this case, relates to the thigh, which contains the femur. The relative position of these two large vessels is very important