Two Minutes of Anatomy: Quadratus Lumborum (QL)

Quadratus Lumborum
Origin: Internal lip of iliac crest & iliolumbar ligament.
Insertion: Rib 12 & transverse process of L1-L5.
Innervation: 12th Thoracic & 1st through 4th ventral rami of lumbar nerves.
Concentric Actions:
Unilateral: Lumbar lateral flexion.
Bilateral: Lumbar extension & ribcage depression.



Dr Donald A Ozello DC of Championship Chiropractic in Las Vegas, NV
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