Iliac Crest Impingment: With spasm of quadratus lumborum, the ribs very quickly descended below the level of iliac crest (prior 2-3 fingers space). This would irritate the cluneal nerve that come across iliac crest (worst spot 1/2 way out). Lower ribs would get sore from rubbing as well . The very superficial muscles also tightened up and just running a finger deeply along iliac crest midline back out to flank- to strip the muscles would loosen things up surprisingly.

Iliac Crest Impingment: With spasm of quadratus lumborum, the ribs very quickly descended below the level of iliac crest (prior 2-3 fingers space). This would irritate the cluneal nerve that come across iliac crest (worst spot 1/2 way out). Lower ribs would get sore from rubbing as well . The very superficial muscles also tightened up and just running a finger deeply along iliac crest midline back out to flank- to strip the muscles would loosen things up surprisingly.

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