QUADRATUS LUMBORUM

Quadratus Lumborum muscle

Origin of Quadratus Lumborum

Iliac crest and iliolumbar ligament.

Insertion of Quadratus Lumborum

Last rib and transverse processes of lumbar vertebrae.

Muscle Action/Function of Quadratus Lumborum

Alone(unilateral), lateral flexion of vertebral column; Together (bilateral), depression of thoracic rib cage.

Arterial (Blood) Supply of Quadratus Lumborum

Lumbar arteries, lumbar branch of iliolumbar artery.

Quadratus Lumborum Video

Quadratus Lumborum (QL) Muscle

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