Innominate and pubic dysfunctions

4 min read. Updated October 9, 2026.Founders

Innominate and pubic dysfunctions are named for the side of the pelvis that moves wrong. One test finds the side, and the landmarks tell you what kind of dysfunction it is.

Finding the side

  • Standing flexion test: the patient stands and bends forward while you follow both PSISs. The side whose PSIS moves up earlier or farther is the involved side. Standing lets the innominates move on the sacrum, so this test points at the innominate (and the pubis).
  • ASIS compression test: with the patient supine, press each ASIS toward the table in turn. The side that resists springing is restricted.
  • Seated flexion test: negative in innominate and pubic dysfunction on boards.

Once you know the side, compare its landmarks to the other side. Landmark tests have limited reliability, so real patients do not always show every finding.

The rest of this guide is for founders

Founders get every guide, endless cases with an AI tutor, and Anki export of their misses. Here is what is inside:

  1. Finding the side
  2. The landmark table
  3. Pubic shears
  4. Muscle energy
  5. Exam traps
  6. How this connects

Read next