Outer lip of iliac crest - e-Anatomy - IMAIOS

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The outer lip of iliac crest constitutes the lateral portion of the ventral (anterior 2/3rd) segment of the hip bone’s iliac crest. It is positioned lateral to the intermediate zone.In general, the iliac crest of the hip bone can be anatomically divided into ventral (anterior 2/3rd) and dorsal (posterior 1/3rd) segments. The ventral segment can be further subdivided into three longitudinal regions:An outer lip of iliac crestAn inner lip of iliac crestAn intermediate zone, which lies between the outer and inner lips.The outer lip of iliac crest serves as the attachment site for the fascia lata along its entire length. Muscles attached to the outer lip, in an anterior to posterior direction, include the tensor fasciae latae, external oblique, and latissimus dorsi. Notably, a prominent bony projection known as the iliac tubercle extends outward from the outer lip, positioned slightly behind the anterior superior iliac spine. It serves as the point of origin for the iliotibial tract.