Morphometric and Morphological Study of First Rib

Abstract

Ribs are protective ribbon-like bony elements, normally present within the chest wall and are few of the most imaged structures in the clinical practice. First rib takes part in the formation of bony boundary for the inlet of the thorax. The key muscle of the root of the neck; the scalenus anterior is inserted into the inner border of the first rib, by producing a scalene tubercle. The prominence of which varies in front of it on the superior surface there is groove for the subclavian artery. There is no angle and no costal groove for the first rib. The rib may not be complete being replaced by cartilage or ligament in which case signs and symptoms of cervical rib may be occur. The first rib was chosen due to its distinct shape, compact size and increased sustainability to the taphonomic processes encountered in forensic and bioarchaeological situations. Rib anomalies are relatively common and affect almost one percent of the general population. Commoner rib anomalies include cervical ribs, bifid ribs, rib dysplasia, and intercostal fusion. Keeping all these things into account a study of the first rib was undertaken.