Where Is the Iliocostalis Lumborum?
A long muscle that runs from the ribs down the spine and around the tailbone.
What are the Symptoms of a Iliocostalis Lumborum Tear or strain?
- Pain in the low back
- Pain concentrated in the buttock
- Occasionally pain in the low abdomen
Causes of pain
- Bending and twisting when lifting
- Straining when trying to lift something too heavy
- Whiplash of the lower back
- Extended periods of sitting in a car or plane
What is The Function of the Iliocostalis Lumborum?
This muscle extends and laterally flexes the thoracolumbar spine.
- Straightens the back
- Bends the back side to side
- Twists the back side to side
- Shifts the pelvis side to side
Origin and Insertion of Iliocostalis Lumborum
Origin:
It originates from the common origin of the erector spinae muscles, which includes the following:
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Spinous processes and supraspinous ligament of T11 through L5 (supraspinous ligament ends between L2 and L4)
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Median sacral crest
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Sacrotuberous ligament
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Long posterior sacroiliac ligament
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Lateral sacral crest
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Posteromedial iliac crest
Insertion:
Attaches onto the posterior and inferior surfaces of the angles of the lower six to nine ribs.
Stretches for Iliocostalis Lumborum
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Strengthen the Iliocostalis Lumborum
