Question

which of the following is consistent with a sacroiliac flexion restriction?
increased lordosis
psis more prominent on the side of restriction
psis less prominent on the side of restriction
crrroa or crrloa

Explanation:

Sacroiliac flexion restriction limits the anterior rotation of the sacroiliac joint on the affected side. This causes the posterior superior iliac spine (PSIS) on the restricted side to stay more prominent, as the normal anterior rotation that would reduce its prominence cannot occur. Increased lordosis is not directly linked to this specific restriction, a less prominent PSIS would align with excessive flexion, and CRRROA/CRRLOA relate to rotation restrictions, not flexion.

Answer:

PSIS more prominent on the side of restriction