The completely revised and formatted 9th edition of the landmark patient book contains easy-to-read, updated content from McKenzie, new photos and numerous pages of education and clinicaly-proven exercises. Illustrated. Softcover, 100 pages. Robin McKenzie is the most influential person in Orthopedic Physical Therapy. - Honoring Our Giants survey; Advance for Physical Therapists PT Assistants - Volume 15, No.14; June 21, 2004