Where Is the Longissimus Lumborum?
The longissimus thoracis is a muscle found in the deep back. It attaches the low back (lumbar) vertebrae to the upper and middle back (thoracic) vertebrae and to the lower 9 to 10 ribs.
What are the Symptoms of a Longissimus Lumborum tear or strain?
Pain in the side of the lower back from the bottom of the ribcage extending down into the buttocks. Pain often increases lower down the buttock.
Pain in the side of the lower back starting at the bottom of the ribcage traveling down to the top of the hip.
What is The Function of the Longissimus Lumborum?
Extension of the thoracic spine, lateral flexion of the thoracic spine, extension of the lumbar spine, lateral flexion of the lumbar spine.
- Straightens (extends) the back (vertebral column)
Origin and Insertion of Longissimus Lumborum
Origin: The iliolumbar fascia, the posterior medial lip of the iliac crest, the lateral crest of the sacrum, and the spinous processes of T11 to L5
Insertion: Inferior borders of the angles of the lower six or seven ribs
Stretches
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