In a left anterior interior chain (AIC) pattern, the pelvis rotates anteriorly on the left, posteriorly on the right, and the sacrum rotates rightward while the lower vertebrae orient rightward, creating consistent rotational tension on the left QL that contributes to pain.

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Unidentified Speaker — Why Does Your Left Quadratus Lumborum Hurt? [rffVhQ9JnpI]

Evidence Quote

when you're in a pattern a left aic pattern your pelvis on the left side is forward right side is back and that sacrum turns to the right and the lower vertebrae turn orient to the right

Source

Why Does Your Left Quadratus Lumborum Hurt?Neal Hallinan
Created: 8/13/2026, 10:18:19 AM

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