2/20/2024 0 Comments Is the rib a flat boneThe costal groove protects the neurovascular bundle, in order from superior to inferior the intercostal vein, artery and nerve (mnemonic: VAN). The inferior border contains a groove called the costal groove. The angle marks the lateral limit of the attachment of the deep back muscles to the ribs. The shaft bends anteriorly at the angle of the rib. It is thin, flat and twisted on the long axis. The non-articular part provides attachment for the lateral costotransverse ligament. The tubercle, immediately after the neck, is a prominence on the external surface of the rib which contains a medial facet that articulates with the transverse process of the numerically corresponding vertebra. The neck is the narrow portion of the rib, between the head and tubercle. The head of a rib has two facets for the vertebral body above and below, which are separated by the crest of the head, which itself attaches to the intervertebral disc of the vertebrae above. Ribs have a rounded, smooth superior border.
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