Trigger Point Therapy 

Definitions/Characteristics

Treatments

Referral areas
 

Web Resources (links open in new windows and take you off site)
  Podiatrists guide to triggerpoints - lower leg and foot referral diagrams
Trigger point referral zones- Orthodoc, James Clay  photos with referral zones
Sample plates from Travell- SI joint referral zones

Books  (links take you to Amazon.com)
Travell & Simons :  Myofacsial Pain and Dysfunction, The Triggerpoint Manual; 2 volume set

Leon Chaitow.  Soft Tissue Manipulation

Bonnie Prudden.  Myotherapy.