I think it's considered the main of all the Mezierist's method for scoliosis.
http://www.medpagetoday.com/MeetingCoverage/AAN/887
http://www.medscape.com/viewarticle/503184
http://www.medpagetoday.com/MeetingCoverage/AAN/887
http://www.medscape.com/viewarticle/503184