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Amy Weinberger

Longissimus & Iliocostalis muscles: their role in low back and sacroiliac joint pain

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The longissimus muscle is a spinal extensor which attaches to the back of the sacrum and it will pick up the slack if your transversus abdominis (TVA) and multifidus are not pulling their weight! If overactive, longissimus can increase tension in the thoracolumbar fascia (TLF) and nutate the sacrum, potentially contributing to low back pain.  
Similarly iliocostalis – another spinal extensor – can pull the pelvis into anterior rotation (and the sacrum into counternutation) and contribute to sacroiliac joint (SIJ) instability.
Both muscles are important to consider in the context of low back and/or SIJ pain.

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About The Author
Amy Weinberger
Amy Weinberger

Amy Weinberger is an Advanced Clinical Massage Therapist based in Brighton & Hove. Her particular areas of special interest are issues relating to the low back, hip and pelvis.

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