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The costal margin is the medial margin formed by the cartilages of the seventh to tenth ribs. It attaches to the body and xiphoid process of the sternum. [2] The thoracic diaphragm attaches to the costal margin. [3] The costal angle is the angle between the left and right costal margins where they join the sternum. [2]
In old age, the costal cartilages are prone to superficial ossification, particularly in women with age of 50 years and over. [3] In costochondritis and Tietze syndrome, inflammation of the costal cartilage occurs. [4] This is a common cause of chest pain. [5] Severe trauma may lead to fracture of the costal cartilage. [6]
Costal may refer to: an adjective related to the rib (Latin: costa) in anatomy Costal cartilage, a type of cartilage forming bars which serve to prolong the ribs forward; Costal margin, the medial margin formed by the false ribs; Costal surface (disambiguation) Costal groove, a groove between the ridge of the internal surface of the rib
The subcostal plane is a transverse plane which bisects the body at the level of the 10th costal margin and the vertebra ... Wikipedia® is a registered trademark ...
The media may also fork twice, therefore having four branches reaching the wing margin. According to the Comstock–Needham system, the cubitus forks once, producing the cubital veins Cu 1 and Cu 2. According to some other authorities, Cu 1 may fork again, producing the Cu 1a and Cu 1b. As there are several anal veins, they are called A1, A2 ...
Above the costal margin [ edit ] Since the tendons of the internal oblique and transversus abdominis only reach as high as the costal margin , it follows that above this level the sheath of the rectus is deficient behind, the muscle resting directly on the cartilages of the ribs, and being covered only by the tendons of the external obliques.
It is a crescent-shaped space, encompassed by the lower edge of the left lung, the anterior border of the spleen, the left costal margin and the inferior margin of the left lobe of the liver. Thus, its surface markings are respectively the left sixth rib superiorly, the left mid axillary line laterally, and the left costal margin inferiorly.
Iliocostal friction syndrome, also known as costoiliac impingement syndrome, is a condition in which the costal margin comes in contact with the iliac crest.The condition presents as low back pain which may radiate to other surrounding areas as a result of irritated nerve, tendon, and muscle structures.