“Threshold” refers to the degree of force exerted upon the body during the vehicular impact that is required to produce different types of injuries categorized as; “Injury Severity Types” or “Trauma Lines”. The predominant thinking among Insurance companies is that different forces are in action during a collision that produce different “Injury Severity Types” and “Trauma Lines” that are caused by threshold factors related to the:
Injuries are further ranked by AMA into “Specific Disorders of the Spine” and it is vital that the doctor has an understanding and knowledge of both the forces that are in action that produce the different “Injury Severity Types” in order to diagnose, treat and represent them.
See the section on “Injury Severity Types”