Which listing is associated with contact on the iliac crest?

• A. PI
• B. IN
• C. AS
• D. EX

Answer: (A)

Understanding how listings map to contact location is key. When you place contact on the iliac crest, you’re targeting the posterior part of the ilium. The listing that reflects a posterior ilium contact is the one abbreviated as PI. So the iliac crest contact aligns with a Posterior Ilium listing.

The other options correspond to different pelvic landmarks or directions (for example, anterior superior would be toward the front upper pelvis near the ASIS, inferior would be lower on the pelvis, and EX describes a direction not specifically tied to the crest). These do not match the crest region as well as the posterior ilium contact.