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Iliocostalis and Longissimus (of the Erector Spinae Paraspinal Group) – myofascial trigger points and their referral zones.
Erector spinae paraspinal group:
Posterior views of myofascial trigger points in the right-side iliocostalis and longissimus and their corresponding referral zones. Left-side figure: iliocostalis. Right-side figure: longissimus bilaterally.