Pronunciation: [stˈɜːnad] (IPA)
Correct spelling for the English word "sternad" is [stˈɜːnad], [stˈɜːnad], [s_t_ˈɜː_n_a_d] (IPA phonetic alphabet).
In a direction toward the sternum.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.