The iliac tubercle and the iliotibial tract are anatomical landmarks on which bone?

• A. Ischium
• B. Ilium
• C. Pubis
• D. Femur

Answer: (B)

These landmarks sit on the ilium, the upper wing of the hip bone. The iliac tubercle is a distinct bump along the iliac crest, a feature of the ilium. The iliotibial tract is a thick band of fascia that runs along the lateral thigh and has its proximal attachment along the iliac crest region of the ilium. Because both markings are tied to the crest area of the hip bone, they identify the ilium rather than the other pelvic bones or the femur. The ischium and pubis are other parts of the pelvic bone but do not present this iliac crest tubercle, and the femur is the thigh bone, not the site of these ilial landmarks.