The National Highway Traffic Safety Administrations reports that more than two million people are injured every year in auto-related accidents involving either a passenger vehicle, large truck, or motorcycle. Furthermore, that number appears to be climbing at an alarming rate, increasing more than five percent between 2014 and 2015 alone. Certainly, being involved in this type of incident can have long-lasting effects. For instance, one study published in the journal Psychosomatic Medicine found that “a substantial minority” of subjects questioned reported experiencing anxiety when traveling in a motor vehicle post-accident, with 10 percent developing post-traumatic stress disorder (PTSD), a condition that, in some cases, plagued them for years. Well, another recently published study has found that being in a car crash can also result in long-term physical ramifications as well. Specifically, it discovered that back pain can linger or appear long after the vehicle has been fixed and the debris has been cleaned out of the roadway. In April of 2017, the European Spine Journal presented a study involving 789 adults, all of whom reported experiencing mild low back pain or no pain at all. Upon entering the study, each person was asked whether or not he or she had been in a motor vehicle accident resulting in low back pain, making note of whether their level of pain increased, decreased, or stayed the same six and 12 months down the road. Approximately 74.8 percent of the participants responded at the six month mark, with 64.5 percent providing input at 12 months. Of those who did respond, researchers noticed a positive correlation between those who had previously been involved in an auto accident and the incidences of low back pain at a later date. In other words, having a car crash in your past may increase your risk of back pain in the future. This is partially why being assessed right after a car wreck is so critical. While this is relatively standard when it comes to auto injuries that can be seen or easily felt, damage done to the musculoskeletal system isn’t quite so visible or easy to pinpoint, which also makes it easier to ignore. Educating patients is the first step to helping them resolve any subsequent back issues. The second step is to regularly ask them whether they’ve been involved in a crash, no matter how small. If they have, addressing that issue first and foremost can keep their quality of life from being compromised months, years, or even decades later. References

• Mayou R, Tyndel S, Bryant B. Long-term outcome of motor vehicle accident injury. Psychosomatic Medicine 1997;59(6):578-84.
• Nolet PS, Kristman VL, Côté P, Carroll LJ, Cassidy JD. The association between a lifetime history of low back injury in a motor vehicle collision and future low back pain: a population-based cohort study. European Spine Journal 2017;doi:10.1007/s00586-017-5090-y
• Traffic Safety Facts. (August 2016). 2015 Motor Vehicle Crashes: Overview. National Highway Traffic Safety Administration. 

Johns Hopkins Medicine defines pain as “an uncomfortable feeling that tells you something may be wrong.” Depending on its cause, this feeling can range from being mildly annoying to absolutely debilitating in nature, potentially preventing a person from having any quality of life whatsoever. Additionally, some pains are constant and steady, whereas others tend to come and go.

Regardless of the type, intensity, and consistency of the pain, at some point in our lives, we all experience this feeling in one form or another. However, whether or not we’re able to effectively handle it is largely determined by our individual pressure pain thresholds. In other words, the higher our thresholds, the less impact these pains have on our lives, and one fairly new study has found that chiropractic may just increase that limit.

In December of 2016, Chiropractic & Manual Therapies published a piece of research which set out to determine what effect, if any, spinal manipulation therapy (SMT) had on pressure pain threshold. Individuals were recruited from Murdoch University campus in Western Australia and, ultimately, 34 subjects ranging in age from 18 to 36 qualified for inclusion. Twenty of the participants were male, with the remaining 14 being female, all of whom were assessed at the beginning of the study and declared asymptomatic.

Using an algometer with a 1cm² rubber probe, the participants’ deep mechanical pain sensitivity was assessed multiple times at four different sites on the body (calf, lumbar, scapula, and forehead) by asking each one to indicate the point in which the pressure turned into pain. The average of the second and third recordings was used as a baseline.

Once the initial data was recorded, each participant was then subjected to a high-velocity, low-amplitude spinal manipulation using the hypothenar mammillary push while the subject lay on his or her side. Furthermore, the thrust was aimed at the portion of the participants’ spine located between the L5 and S1 vertebrae. Upon completion, the pressure pain threshold was collected again, and then again at 10, 20, and 30 minutes after the conclusion of the treatment session.

Researchers found that, after engaging in just one session of SMT, subjects reported increases in pressure pain threshold in the calf and lumbar spine areas, with no notable reduction in the scapula or forehead. Additionally, the thresholds that did increase did so at a higher rate on the right side of the participants’ bodies than on the left.

This study shows promise for patients dealing with chronic pain issues as chiropractic adjustments seem to provide an instantaneous reduction in pain. Further research with a larger group of test subjects is warranted.

Dorron SL, Losco BE, Drummond PD, Walker BF. Effect of lumbar spinal manipulation on local and remote pressure pain threshold and pinprick sensitivity in asymptomatic individuals: a randomised trial. Chiropractic & Manual Therapies 2016;24:47.10.1186/s12998-016-0128-5 What is Pain/Types of Pain Treated?  Johns Hopkins Medicine: Blaustein Pain Treatment Center.