Ama guides to the evaluation of permanent impairment r ama guides r is published by the american medical association it is used in workers compensation systems federal systems automobile casualty and personal injury cases to rate impairment not disability it is used internationally the ama also offers best standards to the evaluation of causation and work ability. Ama guidesr to the evaluation of permanent impairment an overview for over 50 years the ama guides to the evaluation of permanent impairment have been the trusted source that physicians patients and regulators rely on for fair and consistent impairment rating guidance and tools more than 40 states and several countries rely on the ama . Guides to the evaluation of permanent impairment sixth edition corrections and clarifications 1 page 20 table 2 1 fundamental principles of the guides numbers 1 6 13 and 14 1 concepts and philosophy in this chapter are the fundamental principles of the guides they shall preempt anything in subsequent chapters that conflicts with or compromises these principles 6 impairment . Guides to the evaluation of permanent impairment fifth edition the lower extremities tye j ouzounian md the lower extremities everything you need to know is in the book section references listed on slide in lower left corner section reference definitions impairment a loss loss of use or derangement of any body part organ system or organ function disability an alteration of an . Ama guides to the evaluation of permanent impairment fifth edition authors gunnar bj andersson linda cocchiarella title page 2 preface 4 chairs contributors and reviewers 6 table of contents 10 list of tables and figures 14 chapter 1 philosophy purpose and appropriate use of the guides 24 11 history 24 12 impairment disability and handicap 25 13 the organ system