Pelvis rotation is a frequently overlooked cause of lower back pain and sciatica. Single or double-sided pelvis rotations in an anterior direction cause the iliac crest bone(s) to dig into the lower back. The iliac crest bones compress the sciatic nerve exiting the lumbar vertebrae. Lordosis (swayback) is a visual indicator of an anterior pelvis rotation.
If one iliac crest is elevated, the lumbar vertebrae transverse processes tilt like a see-saw and may exert pressure on the sciatic nerves exiting the spinal column above or below.
Either way, the result is sciatic pain that may radiate into the left and/or right buttock and refer down the leg.
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