anterior rotation, ASIS, inflaring, measurement, outflaring, posterior rotation, SI Joint, symmetry, umbilicus

Purpose

Used to determine if there is anterior or posterior rotation of the ASISs and/or inflaring or outflaring of the ASISs. Part of a supine SI joint evaluation.

Technique

Patient positioned supine.

Clinician palpates patient’s ASISs and looks for rotation.

Clinician then measures for inflaring or outflaring by palpating ASIS on one side with his thumb and rotates hand so index finger touches umbilicus.

Clinician repeats technique on other side looking for symmetry.

To measure with a tape measure, Clinician measures from ASIS to umbilicus.

Interpretation

An ASIS that is more anterior than the other is anteriorly rotated, while an ASIS that is more posterior than the other is posteriorly rotated.

An ASIS that is internally rotated is inflared and an ASIS that is externally rotated is outflared.

Related videos:

1. Leg Length Test – Tape Measure
2. Anterior & Posterior Gapping of SI Joint (Squish Test)
3. Leg Length Test – Bridge & “Plop”
4. Short Arm Test (Form Closure Test)
5. SI Mobilization To Correct Posteriorly Rotated Innominate