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The Reason You Feel Neck Pain After a Car Accident

March 3, 2011

The most common causes of whiplash are injuries that arise from motor vehicle accidents (MVA). So you’re stopped at a red light, waiting for the light to turn green and suddenly you hear the screech of tires followed by a sudden jolt as the car from behind collides into the back of your vehicle.  Even if you see the inevitable collision prior to the impact, the sudden jolt occurs so fast that you really don’t have a chance to brace and you feel yourself being forced back into the seat and headrest followed by a rebound forward.

You feel the restraint across your chest and lap belts tighten as you’re propelled forward.  The seat belt saves your life by stopping you from hitting the steering wheel or from being launched forward through the windshield.  However, at this point of the impact, the soft tissue damage (muscles, ligaments and tendons, compressed or ruptured nerves and discs, and bruised internal organs) has been done!

This ALL occurs in less than 500 milliseconds.  You cannot voluntarily contract your muscles this fast, which means even if you had time to prepare yourself for the impact, you can’t stop the whiplash effect!

It’s been found that muscles in the front of the neck contract first at about 100 ms, which is 25 ms too late to prevent ligament or muscle damage, and they reach their peak stretch at 150ms (see 3rd from the left picture above).  The muscles in the back of the neck start contracting soon thereafter but are injured more than the muscles in the front of the neck around the 300ms point.  The reason for this is because as the head rebounds forwards, the muscles in the back of the neck are in the process of tightening up or shortening at the same time they are being stretched  (your body’s attempt to protect itself under normal forces) but NOT a good combination under the excessive G-Forces experienced during a car crash.

This is one reason why many people injured in MVAs often complain of greater intensity of neck pain in the back of the neck than in the front of the neck.  Patients often present to our office following a car accident with neck pain in the front, sides, and back of the neck, and in more severe cases the pain will radiate into the shoulders, arms and even to the hands and fingers, indicating injury to the deeper spinal nerves.

This also helps explain why headaches are common symptoms associated with whiplash as the upper 3 nerves that exit the top of the spine in the neck go into the head/scalp and are compressed or squeezed by the tight muscles in the back of the neck when they are injured which results in headaches. The spinal discs can also be injured by whiplash, requiring proper diagnostic studies such as an MRI.

Whiplash and Whiplash Associated Disorders (WAD) can be quite serious and debilitating.  They should be taken seriously, and anyone suffering from the injuries of a car accident should be seen by a physician who specializes in these types of injuries. Too often, a primary care doctor will simply prescribe pain medication and some rest, ignoring the potential severity of their patient’s symptoms following a car crash, neglecting important treatment that could save the patient from future pain and disability.

If you or someone you know has recently suffered from a car accident injury, have them call our office for assistance at 678-223-3900 or visit our website at PremierHealthRehab.com

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4 Comments leave one →
  1. March 14, 2011 3:43 am

    Great post. As a personal injury lawyer in Washington state, I am always looking for ways to better explain whiplash injuries to a jury. You provided a very clear explanation for why people have neck pain after a car accident. Keep up the good work!

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