Episode 67: Popular Explanations for SI Joint Pain are Wrong, Says Science

Movement Logic: Strong Opinions, Loosely Held

Welcome to Episode 67 of the Movement Logic podcast! In this episode, Laurel and Sarah discuss what current science, versus outdated advice and conventional wisdom, have to say about the causes and solutions for sacroiliac joint (SIJ) pain. Learn what research says about whether or not the SIJ is an inherently robust or fragile structure, whether things like lots of stretching in yoga or joint laxity during pregnancy contribute to its instability, and what therapists can and cannot reliably know about the causes of SIJ pain.

You will learn:

• The anatomy and biomechanics of the SIJ.
• How Sarah differentiates between low back pain and SIJ pain with her patients.
• What joint incongruency is and what therapists can and cannot know about joints through palpation.
• What amount of force is required to dislocate the SIJ.
• What SIJ form and force closure are, and how they are used to explain SIJ pain.
• Some common explanations, assessments, and treatments for SIJ pain that lack evidence.
• Why muscle testing is an unreliable way to assess muscle strength or weakness.
• The problem with muscle imbalance theories.
• How upper and lower cross syndrome theories —the idea that muscles can be “locked short” and “locked long”— has since been replaced by more contemporary research.
• What evidence-based tools we have to address SIJ pain.

And more!

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Episode 21: Is the SI Joint Painful Due to Instability?

Evidence-Based Diagnosis and Treatment of the Painful Sacroiliac Joint

The sacroiliac joint – Victim or culprit

A radiostereometric analysis of movements of the sacroiliac joints during the standing

Clinical tests of the sacroiliac joint.

Effects of mobilization treatment on sacroiliac joint dysfunction

Association between the serum levels of relaxin and responses to the active straight leg raise

High-velocity, low-amplitude manipulation (HVLA) does not alter three-dimensional position of sacroiliac joint

Effects of mobilization treatment on sacroiliac joint dysfunction syndrome