Anomalies of ribs
Accessory Ribs: This results from the development of the costal processes of cervical or lumbar vertebrae, and is usually rudimentary. The most common type of accessory rib is a lumbar rib, but it usually causes no problems.
Fused Ribs : Fusion of ribs occasionally occurs posteriorly when two or more ribs arise from a single vertebra, they are often associated with a hemivertebra.
Hemivertebra; This condition results from failure of one of the chondrification centers in the developing vertebral bodies to appear and subsequent failure of half of the vertebra to form. This defect produces scoliosis
Anomalies of the Sternum
Pes excavatum: Is a concave depression of the lower sternum. It is probably due to overgrowth of the costal cartilages, which displaces the lower sternum posteriorly.
Minor sternal clefts (e.g., a notch or foramen in the xiphoid process) are common and are of no clinical concern.
Accessory Ribs: This results from the development of the costal processes of cervical or lumbar vertebrae, and is usually rudimentary. The most common type of accessory rib is a lumbar rib, but it usually causes no problems.
Fused Ribs : Fusion of ribs occasionally occurs posteriorly when two or more ribs arise from a single vertebra, they are often associated with a hemivertebra.
Hemivertebra; This condition results from failure of one of the chondrification centers in the developing vertebral bodies to appear and subsequent failure of half of the vertebra to form. This defect produces scoliosis
Anomalies of the Sternum
Pes excavatum: Is a concave depression of the lower sternum. It is probably due to overgrowth of the costal cartilages, which displaces the lower sternum posteriorly.
Minor sternal clefts (e.g., a notch or foramen in the xiphoid process) are common and are of no clinical concern.
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(Copyright © 2011 by U. Bala)