infrasternal angle

(redirected from subcostal angle)

in·fra·ster·nal an·gle

the angle between the lower borders of the costal cartilages of the two sides as they approach the sternum.
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During pregnancy, the rib cage undergoes structural changes in response to progressive relaxation of the ligamentous attachments of rib increasing the subcostal angle from 68[degrees] to 103[degrees].