RSS Feed

Posted on 02-02-2012

Morning everyone!  The insurance industry has been very successful at making everyone think that those in car accidents (particularly when the car has little damage) and claim injury that they are faking it.  In reality the injuries that occur at 12 mph change in velocity actually are the worst injuries as the car does not crumple absorbing the forces.  Think of it as if you punch someone it will hurt, if you punch through a thick pillow the pillow will absorb some of the force and the person will be less injured.  Most signs and symptoms from low speed collisions do not show for 2-3 days after the injury...which of course is why the insurance company tries to settle the claim right away.  It is often claimed that below a certain speed change "injury will not occur," and this threshold is purported to be 5 mph.  This article from the Personal Injury Law Journal in 2006 discusses this claim.  From the Journal:

Collisions between motor vehicles and the occupants of those vehicles must conform to Newton's Laws of Motion.

"Historically, the argument about injury or likelihood of injury had been the domain of the medical experts, albeit without any true scientific evidence on which to base an opinion."

A struck vehicle will accelerate forward, with or without vehicle damage. This will cause accelerations of the occupant's chest and head.

This author and his colleagues have produced crashes resulting in a change in velocity of 5.97 mph of the struck vehicle. This caused a 4.7 g acceleration of the occupant's chest and an 8.3 g acceleration of the occupant's head. The difference between the head and chest acceleration was 3.6 g. This resulted in the symptoms of strains and headaches.

However, this research also showed that not all occupants reacted in the same manner to the same change in velocity.

This author and his colleagues have also produced collisions that produced a change in velocity between 2.8 to 3.1 mph. This resulted in a chest acceleration of 2.93 g and a head acceleration of 3.46 g. the difference between the chest and head acceleration was 0.53 g.

This author states:

1) "It is my opinion that beyond a speed change of 5 mph, the risk of injury is high."

2)  "The risk [of injury] between 3 mph and 5 mph [speed change] is a grey area that would need further exploration, and injury cannot be ruled out." 

3)  "The risk [of injury] below 3 mph [speed change] is minimal."

KEY POINTS I WANT YOU TO KNOW:

1) Collisions between motor vehicles and the occupants of those vehicles must conform to Newton's Laws of Motion.

2) "Historically, the argument about injury or likelihood of injury had been the domain of the medical experts, albeit without any true scientific evidence on which to base an opinion."

3) A struck vehicle will accelerate forward, with or without vehicle damage. This will cause accelerations of the occupant's chest and head.

4) Crashes resulting in a change in velocity of 5.97 mph of the struck vehicle cause a 4.7 g acceleration of the occupant's chest and an 8.3 g acceleration of the occupant's head. The difference between the head and chest acceleration is 3.6 g. This resulted in the symptoms of strains and headaches. Remember a change in velocity is the increase or decrease of the existing speed and not necessarily from STOP.  

5) Not all occupants will react in the same manner to the same change in velocity.

6) This author states:

  1. A))  "It is my opinion that beyond a speed change of 5 mph, the risk of injury is high."

  2. B))  "The risk [of injury] between 3 mph and 5 mph [speed change] is a grey area that would need further exploration, and injury cannot be ruled out."

  3. C))  "The risk [of injury] below 3 mph [speed change] is minimal."

    If you or a loved one is in a car accident, absent a life threatening condition, your first choice of care should be with a Chiropractor.  Our office specializes in evaluation and management of motor vehicle traumas.  I am currently involved in advanced courses in car accident management, testimony in court, motor vehicle evaluation, accident reconstruction, and I will be involved in human crash testing published in the scientific literature.  Please give us a call and be careful what you say when the insurance company calls as your pain may very well substantially increase over time.

    Have a blessed day! 

    MERB50.Meredity.Email.Signature.jpg

There are no comments for this post. Please use the form below to post a comment.

To leave a comment, please login as a member

Contact

 
WellnessOne of Redding
2515 Park Marina Drive, Suite 101
Redding, CA 96001
Get Directions
  • Phone: 530-243-9464
  • Fax: 530-243-9499
  • Email Us

Office Hours

DayMorningAfternoon
Monday8:30 - 1:003:00 - 6:00
Tuesdayclosed3:00 - 6:00
Wednesday8:30 - 1:003:00 - 6:00
Thursdayclosed3:00 - 6:00
Friday8:30 - 1:00By Appt
Saturdayclosedclosed
Sundayclosedclosed

Featured Articles

Newsletter Sign Up