Impairment ratings in the Sixth Edition are calculated using a diagnosis-based method. Principles of assessment must be followed to assure an accurate impairment rating. The Guides Sixth Impairment Training Workbooks are designed to review and reinforce the concepts described in the Sixth Edition. The following questions and answers, excerpted from the Guides Sixth Impairment Training Workbooks - Lower Extremities, illustrate some of the principles of assessment common to musculoskeletal impairment assessment. The Workbook contains 150 content-based questions with answers, rationales, and thought-provoking tips. It is part of a CME-approved series that includes upper extremities, spine, internal medicine, and pain, neurology, and mental disorders. For an up-to-date list visit

Grade modifiers are included only if:

ANSWER:e. a and b only


Grade modifiers are considered only if they are determined by the examiner to be...

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