Focus Area: Lumbar Spine/SI Joint
Understanding the Squish Test (Sacroiliac Joint) Assessment
To assess for SI joint pathology by applying a compressive force, stressing the posterior ligaments.
Watch How It's Done
How do I start?
Patient is side-lying.
What happens?
The examiner applies a firm, sustained **downward force** through the superior ilium (pushing the iliac crest medially and inward) to compress the SI joint.
In Plain English
What Does a Positive Result Mean?
Reproduction of the patient's **posterior SI joint pain**.
Helpful Tip:
This maneuver is less sensitive than gapping but can be useful in a cluster of SI joint provocation tests.
Safety First
This guide is to help you understand what happens in a clinic. Do not try to diagnose yourself. If you have severe pain, swelling, or cannot put weight on your leg, please visit an urgent care center or your doctor immediately.