This beautiful trigger point educational tool includes two charts:Trigger Points: TorsoandTrigger Points: Extremities. Each chart illustrates and labels the muscles affected by trigger points, and shows trigger point locations with primary and secondary pain sensitive zones. Each chart includes a legend that explains how to identify particular trigger points and their pain zones. This edition has updated images and improved content organization to maximize visual impact. The torso chart shows trigger points of the upper torso and shoulder, posterior deep and anterior-posterior pain referral guide. The extremities chart shows upper extremity, lower extremity, and head and neck trigger points. Made in USAAvailable in the following versions:20" x 26" heavy weight paper laminated with grommets at top corners / set of 2 charts ISBN 978078177307220" x 26" heavy weight paper / set of 2 charts ISBN 9780781773065 | Trigger Point Chart Set by Anatomical Chart Anatomical Chart Com, Hardcover | Indigo Chapters