Muscle of the Month (January 2007): Iliocostalis

Posted on January 17th, 2007, by relax

The Iliocostalis, oriented vertically on either side of the spine, are muscles within the group of muscles in the back referred to as the erector spinae.  The erector spinae assist in the motion of extending the trunk.  The Iliocostalis muscles have at least one end attached to a rib and the other end attached to either another rib, a transverse process or the sacroilium.  I can verify from my 10 years of massage experience that the lower attachment site of the Iliocostalis can become locked in spasm making it feel more like hard bone as opposed to soft tissue.

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