Tag Archives: neck pain

Whiplash Diagnosis.

10 Dec

Whiplash is, by definition, the rapid acceleration followed by deceleration of the head causing the neck to “crack like a whip” forwards and backwards at a rate so fast that the muscles cannot react quickly enough to control the motion. As reported last month, if a collision occurs in an automobile and the head rests are too low and/or seat backs too reclined and the head moves beyond the allowable tissue boundaries, “whiplash” injury occurs.

When gathering information from the patient, this portion of the history is called “mechanism of injury” and it is VERY IMPORTANT, as it helps us piece together what happened at the time of impact. For example, was the head turned upon impact? Was the impact anticipated? What were the weather conditions (visual, road conditions)? What was the direction of the strike (front, rear, side, angular, or combinations of several)? Did a roll over occur? Was a seat belt used (lap and chest) and were there any seat belt related injuries (to the low back/pelvis, breasts/chest, shoulder, neck)? Any head impact injuries with or without loss of consciousness (if so, how long)? Any short-term memory loss and residual communication challenges (post-concussive syndrome)? All of the answers to these questions are very important when determining the examination path, establishing the diagnoses, and determining the treatment plan.

We also discussed last month the WAD classification or, Whiplash Associated Disorders, which was coined in 1995 by the Quebec Task Force. Types I, II, and III are defined by the type of tissues injured and the history and examination findings. In 2001, the Quebec Task Force found that WAD II (loss of range of motion or ROM/negative neurological findings) and WAD III (both ROM loss and neurological loss) carried progressively greater risk of prolonged recovery compared to WAD I injuries (those with pain but no loss of motion or neurological findings).

Establishing a strong diagnosis allows for accuracy in prognosis and treatment plan recommendations. For example, in WAD II & III injuries, flexion/extension x-rays are needed to determine the extent of ligament damage as normally, the individual vertebrae should not translate or shift forwards or backwards by more than 3.5mm. Similarly, the angle created between each vertebra in flexion & extension should be within 11 degrees of the adjacent angles, and if that’s exceeded, ligament damage is likely to have occurred. So often, ER records describe little to no information about the historical elements reviewed in the 1st paragraph and if x-rays were taken, they rarely include flexion/extension stress x-rays.

Headaches are another component of WAD. Here, the first three sets of nerves that exit the uppermost levels of the spine (C1, C2, and C3) innervate the head. When a patient describes headaches that start in the upper part of the neck and radiate up into the head, the distribution of the pain by history can tell us which nerve(s) are most affected. In the examination, applying manual pressure to the base of the skull can reproduce pain when a nerve is injured. Tracking these findings on a regular basis can tell us how the condition is healing. Chiropractic is at the forefront of diagnosis for WAD!

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Whiplash – Can We Predict Long-Term Problems?

9 Dec

Whiplash (or the rapid acceleration forwards followed by deceleration or sudden stopping of the moving head during the whiplash event) occurs at a speed that is so fast, we can’t prepare for it. In other words, by the time it takes us to voluntarily contract a muscle to guard ourselves against injury, that rapid forward/backwards “whipping” of the head and neck is already over! When considering the details of the injury event, sometimes we lose focus on what REALLY matters. Is there a way to reduce the chances for a long-term chronic, disabling, neck pain / headache result? Last month, we found out that the long-term use of a cervical collar is NOT a good idea. What are some other ways to prevent long-term disability?

A very interesting study investigated the first 14 days of treatment during the acute stage of whiplash neck sprain injuries following a car accident. The researchers wanted to determine what long-term consequences resulted from two different treatment approaches. In one group (201 patients, 47% of the total group), the patients were encouraged to, “…act as usual,” and continue in their normal daily, pre-injury activities. The patients in the second group were given time off from work and were immobilized in a soft cervical collar during the first 14 days after the car crash. At the end of the 14 days, there was a significant reduction of symptoms between the first visit to the fifteenth day (24 hours after the 14 day initial treatment time frame in both groups). However, when evaluated at the six-month point, the group that continued their normal daily routine, did not take time off work, and did not wear a collar had, “…a significantly better outcome,” compared to the other group. This study supports that over-treatment with a collar and time off from work “sets people up” for adopting a “sick role” where the patient is overly-focused on their problem. This study parallels what we discussed last month and embraces the chiropractic philosophy to staying active, exercise, don’t use a collar, and the use of manipulation which exercises joints and keeps them from stiffening up, thus reducing pain and the fear of doing activity!

Another study looked at different presenting physical factors that might be involved in the development of long-term handicaps after an acute whiplash injury in a group of 688 patients. They measured these physical factors at three, six, and twelve month intervals and found the relative risk for a disability a year after injury increased with the following: 1) A 3.5 times disability increase with initial high pain intensity of neck pain and headaches; 2) A 4.6 times increase with initial reduced neck movement or ranges of motion; and 3) A 4 times greater chance with initial multiple non-painful complaints (such as balance disturbance, dizziness, concentration loss, etc.). In yet another study, both physical and psychological factors were found to predict long-term disability. These included initial high levels of reported pain and poor activity tolerance, older age, cold sensitivity, altered circulation, and moderate post-traumatic stress.

The “bottom line” is that as chiropractors, we are in the BEST position to treat and manage whiplash injured patients based on the type of care we perform and offer. We promote exercise of muscles and joints, encourage activity not rest, and minimize dependence on medication, collars, and other negative treatment approaches.

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