If a horse is slapping a foot down, it could be which listing?

• A. AS Ilium
• B. PI Ilium
• C. AS Ischium
• D. PI Ischium

Answer: (B)

The situation points to a pelvic listing where the ilium is rotated toward the back and lower on the affected side. That posterior-inferior ilium (PI ilium) orientation changes hindquarter mechanics so the hind hoof tends to strike the ground with a sharper, more abrupt contact — a foot slap. In this listing, the pelvis is effectively tilted in a way that alters how the hind limb absorbs impact, leading to that characteristic slap at ground contact.

The other pelvis/hip orientations involve different tilts of the ilium or ischium and tend to produce different gait or pain patterns, not the specific abrupt foot contact described here. So the best match for a foot slap is the posterior-inferior ilium listing.