Is gravity drive (abnormal) pronation linked to Scoliosis?
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I have theorized that:
- Left foot Gravity drive (abnormal) pronation drives the left innominate bone forward and downward
- This anterior rotation of the left innominate bone displaces the acetabulum cephalad, and with it, the head of the left femur.
- The cephalad displacement of the left femur head thus functionally shortens the left leg (e.g., Functional Leg length Discrepancy)
- Standing, the pelvis tilts downward towards the left side until the left foot rests on the ground
- This left tilt in the sacral base can destabilize the superincumbent spine and result in a left thoracic scoliotic curve.
If this proposed algorithm is valid, one would expect:
In a research paper I published in Podiatry Review (2013), 25 patients demonstrating gravity drive pronation, 23 of those patients followed the above algorithm.
- A gravity drive pronation pattern of left > right, would be linked to a left thoracic scoliotic curve.
- A gravity drive pronation pattern of right > left, would be linked to a right thoracic scoliotic curve.
Rothbart BA 2013. Preliminary Study: Adolescent Idiopathic Scoliosis Linked to Abnormal Foot Pronation. Podiatry Review Vol 72, No 2:8-11.
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