Barbell Medicine Podcast Episode #217: Does SI Joint Movement Cause Hip and Low Back Pain?
Mar 15, 2023
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SI Joint Is Mostly Stable
- The sacroiliac (SI) joint links the sacrum and ilium but moves only a few degrees or millimeters.
- Most evidence shows the SI joint is architecturally stable and rarely a lone pain generator.
Single-Structure Explanations Are Overused
- Blaming a single structure for back pain follows imaging and palpation advances historically.
- Pain is usually multifactorial, not explained by one 'out of place' structure.
Anatomical Variation Is Wide
- Large anatomical landmarks vary widely between people, so 'normal' orientation is a range.
- There is no validated population standard linking specific ilium orientation to pathology.