\ˈɪlɪˌak spˈa͡ɪnz], \ˈɪlɪˌak spˈaɪnz], \ˈɪ_l_ɪ__ˌa_k s_p_ˈaɪ_n_z]\
Definitions of ILIAC SPINES
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are four in number. They are distinguished into anterior and posterior. Of the anterior, one is superior. It bounds the crista ilii anteriorly, and affords origin to the sartorius muscle. The other is inferior, and receives the tendinous origin of the rectus femoris. The two Posterior Iliac Spines are divided, like the anterior, into superior and inferior. They afford insertion to strong ligaments, which unite the ilium with the sacrum.
By Robley Dunglison