A tight left psoas in a shortened (concentric) position causes its proximal fibers near the spine to rotate the spine toward the right side and externally rotate the left femur, creating anterior pelvic tilt on the left with posterior pelvic positioning on the right.
causalpending
Speaker
Unidentified Speaker — The Secret To Psoas Tightness On One Side (why is no one ta… [qP1lYsMNgbg]Evidence Quote
“when it contracts and pulls right here and these attachment sites come closer to each other it's going to actually turn the spine in the opposite direction so because this contracts it's going to turn the spine towards the right side as it also pulls this femur forward into an externally rotated position”
Created: 8/13/2026, 9:48:06 AM
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