Source : Webster's Revised Unabridged Dictionary (1913)

Sternal \Ster"nal\, a. (Anat.)
   Of or pertaining to the sternum; in the region of the
   sternum.

   {Sternal ribs}. See the Note under {Rib}, n., 1.

Source : WordNet®

sternal
     adj : of or relating to or near the sternum