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Table 1 Case definitions of Whiplash Associated Disorders

From: Managing Injuries of the Neck Trial (MINT): design of a randomised controlled trial of treatments for whiplash associated disorders

Term Definition
WAD Grade 0 No neck complaints or signs
WAD Grade I Complaint of pain, stiffness or tenderness, but no physical signs
WAD Grade II Complaint of pain, stiffness or tenderness, and musculo-skeletal signs (decreased range of motion, point tenderness etc)
WAD Grade III Complaint of pain, stiffness or tenderness and neurological signs (decreased or absent deep tendon reflexes, weakness and sensory deficits). Could also have musculo-skeletal signs.
WAD Grade IV Fracture or dislocation
Late whiplash syndrome Presence of pain, restriction of motion or other symptoms at six months or more after the injury, sufficient to hinder return to normal activities such as driving, usual occupation and leisure.