Correct spelling for the English word "supergenual" is [sˈuːpəd͡ʒˌɛnjuːə͡l], [sˈuːpədʒˌɛnjuːəl], [s_ˈuː_p_ə_dʒ_ˌɛ_n_j_uː_əl] (IPA phonetic alphabet).
Above the knee or any genu.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.