Breaking News
October 19, 2018 - Bariatric Sx Cuts Macrovascular Complications in Obesity, T2DM
October 19, 2018 - Better assessments for early age-related macular degeneration
October 19, 2018 - Visible and valued: Stanford Medicine’s first-ever LGBTQ+ Forum | News Center
October 19, 2018 - Understanding of metal-free enzymes used by bacteria could lead to new effective antibiotics
October 19, 2018 - Beckman Coulter Life Sciences announces new research-focused website
October 19, 2018 - Study finds link between refined soluble fibers, gut microbiota and liver cancer
October 19, 2018 - Social media reduces risk of depression among seniors with pain
October 19, 2018 - Newly developed synthetic DNA molecule may one day be used as ‘vaccine’ for prostate cancer
October 19, 2018 - Preoperative weight loss may not provide health benefits after surgery
October 19, 2018 - U.S. Birth Rates Continue to Drop as Age of New Moms Rises
October 19, 2018 - New technology can keep an eye on babies’ movements in the womb
October 19, 2018 - Juul e-cigarettes pose addiction risk for young users | News Center
October 19, 2018 - Gene sequencing reveals crucial molecular aspects of Trypanosoma brucei
October 19, 2018 - New DNA vaccine strategy protects mice against lethal challenge by multiple H3N2 viruses
October 19, 2018 - Study shows close link between cytokine interleukin-1ß and obesity-promoted colon cancer
October 19, 2018 - Muscle mass plays a critical role in health, shows research
October 19, 2018 - Study finds undiagnosed prediabetes in many infertile men
October 19, 2018 - The Current issue of “The view from here” is concerned with Nanotherapeutic strategies
October 19, 2018 - Delay in replacing the Pap smear with HPV screening is costing lives
October 19, 2018 - Physicians battle pediatric diseases of ear, nose, throat in Zimbabwe | News Center
October 19, 2018 - Researchers investigate why some cancers affect only young women
October 19, 2018 - Drugmakers funnel millions to lawmakers; a few dozen get $100,000-plus
October 19, 2018 - Unselfish people tend to have more children and receive higher salaries
October 19, 2018 - New findings reveal potential cellular players in tumor microenvironment
October 19, 2018 - Human brain cell transplant offers insights into neurological conditions
October 19, 2018 - Parental education associated with increased family health care spending
October 19, 2018 - New statistical method estimates long- and short-term risk of recurrence of breast cancer in US women
October 19, 2018 - Father’s exposure to nicotine may cause cognitive deficits in descendants
October 19, 2018 - Could we prevent Alzheimer’s disease by treating herpes?
October 19, 2018 - Nurse-led care can be more successful in managing gout
October 19, 2018 - Trump administration, pharma exchange verbal volleys on drug-price transparency
October 19, 2018 - Duke researchers find way to detect blood doping in athletes
October 19, 2018 - Many primary care doctors are still prescribing sedative drugs for older adults
October 19, 2018 - Finger length can predict sexuality in women say researchers
October 19, 2018 - Study finds differences in side-effects experienced by male and female OG cancer patients
October 19, 2018 - Few Seniors Who Self-Harm Referred for Mental Health Care
October 19, 2018 - Don’t sweat the sweet stuff
October 19, 2018 - URMC researchers discover new approach to deliver therapeutics to the brain
October 19, 2018 - Middlemen suppliers can increase drug prices and hospital bills, say Johns Hopkins researchers
October 19, 2018 - Survey finds high prevalence of HTLV-1 infection among teens and adults in Gabon
October 19, 2018 - Bliss funds research to find whether parental touch can help alleviate pain in premature infants
October 19, 2018 - Human neurons employ highly compartmentalized signaling, study shows
October 19, 2018 - Ultromics expands multiple clinical trials for coronary heart disease to the U.S.
October 19, 2018 - $11 million NIH grant for Clemson University helps launch new center for musculoskeletal research
October 19, 2018 - A new approach identified to control Zika virus, dengue fever
October 19, 2018 - Head Blows Without Concussion May Not Damage Brain, Study Claims
October 19, 2018 - US opioid use not declined, despite focus on abuse and awareness of risk
October 19, 2018 - Next-generation RNA sequencing technology sheds new light on human mitochondrial diseases
October 19, 2018 - UT Southwestern biochemist receives 2019 Breakthrough Prize in Life Sciences for innate immunity discovery
October 19, 2018 - The immune system also plays a key role in day-to-day function of healthy organs
October 19, 2018 - New tool may reveal how the brain structure impacts brain activity, human behavior
October 19, 2018 - Trump Administration announces ‘Winning on Reducing Food Waste’ initiative
October 19, 2018 - For-profit nursing home residents more likely to experience health issues caused by substandard care
October 19, 2018 - Incidence of stroke has risen steadily among marijuana users, show studies
October 19, 2018 - Conceptual framework proposed to examine role of exercise in multiple sclerosis
October 19, 2018 - Near infrared spectroscopy technique for accurate evaluation of chondral injuries
October 19, 2018 - Scientists receive $5.1 million grant to develop stem cell-based therapy for blinding retinal conditions
October 19, 2018 - Shorter physician encounters associated with antibiotic prescribing
October 19, 2018 - In the Spotlight: Enjoying research and exploring opportunities
October 19, 2018 - Physical activity lowers cardiovascular mortality risk in frail older adults
October 19, 2018 - New imaging tool helps visualize how sound-induced vibrations travel through the ear
October 19, 2018 - Key insights into the application, production of bioactive materials
October 19, 2018 - New urea sorbent could speed up the development of wearable artificial kidney
October 19, 2018 - Intensive care patients’ muscles less able to use fats for energy
October 19, 2018 - FDA Advisory Committee Recommends Approval of Dsuvia for the Treatment of Moderate-to-Severe Acute Pain
October 19, 2018 - 48,XXXY syndrome – Genetics Home Reference
October 19, 2018 - Physical exercise improves the elimination of toxic proteins from muscles
October 19, 2018 - How a new system improved wait times for Stanford kidney transplant patients
October 19, 2018 - Nutrition has bigger positive impact on bone mass and strength than exercise
October 19, 2018 - Study finds lack of progress in media representation of nurses over last 20 years
October 19, 2018 - Many people have trouble understanding differences between OCD and OCPD
October 19, 2018 - New family planning app found to be as effective as modern methods
October 19, 2018 - Gastric Banding, Metformin Similar for Improving Glycemia
October 19, 2018 - Physiologist publishes findings on the role of the protein titin in muscle contraction
October 19, 2018 - What digital health companies need to do to succeed
October 19, 2018 - N. Carolina Sees Alarming Spike in Heart Infections Among Opioid Users
October 19, 2018 - Video monitoring of TB therapy works well in urban and rural areas
October 19, 2018 - Determining acid-neutralizing capacity for OTC antacids
October 19, 2018 - Males who spend more time taking care of kids have greater reproductive success
October 18, 2018 - Study to explore bioethics of brain organoids
Study shows how head, neck positioning affects concussion risk | News Center

Study shows how head, neck positioning affects concussion risk | News Center

image_pdfDownload PDFimage_print

In the new study, Fanton and Camarillo and their fellow researchers ran simulations with this model that replicated low-impact forces and found that tense neck muscles slightly reduced head acceleration. But they also extended those simulations to include higher-force impacts — the kinds that could lead to concussion, such as what someone might experience falling off a bike — with much different results. When looking at fast, hard impacts, it does not seem to matter whether the neck muscles are tensed or relaxed.

“Originally, we thought your neck muscles could affect head acceleration and we wanted to figure out if that offered another strategy for reducing brain injury,” Fanton said. “It was surprising that in these shorter-duration impacts, the neck muscles are not doing a whole lot.”

The importance of positioning

The researchers were also curious whether head and neck positioning could alter front-to-back acceleration after a hard, fast hit. They ran their simulations with the head positioned at a variety of angles and found that small variations in position could mean the difference between high and low concussion risk. Their results showed that both the angle of the head and where it is hit affect the subsequent rotation of the head.

All this raised the question of how woodpeckers are able to withstand so much pounding — thought to produce head-on accelerations 10 times greater than those that cause severe concussions in athletes. So, the researchers created a simplified head and neck model of a woodpecker and ran it through the same positioning tests they had run in the human simulations. What they found is that small changes in position could substantially change the head acceleration the bird experienced. When the researchers aligned their model in the way real woodpeckers hold themselves as they peck, they noticed very low rotational acceleration.

However, the group cautioned that position alone likely doesn’t explain the woodpecker’s ability to withstand these forces. Scientists have suggested the size of their brains and features of their beak may be mitigating factors.

Focusing on prevention

Although the Camarillo lab and others in the field are finding that the neck muscles and ligaments might not prevent the kinds of head movement that lead to concussions, neck positioning is not a simple solution. Positions that could prevent concussions might make people more susceptible to other injuries, such as paralysis, and what protects one person could potentially raise the injury risk of another person involved in the same impact.

“Discovering how sensitive the head is to slight changes in positioning has implications on design of helmets and other protective equipment,” Camarillo said. “For example, could the facemask in football be offering a lever arm that adds to the rotation of the head and therefore risk of concussion? Are downhill mountain bike helmets protecting the chin at the cost of the brain? We hope to use this model we have developed to determine better design geometry of helmets and potentially for input to coaching on how to brace for impact.”

Ultimately, Camarillo is hoping this kind of modeling work can aid in developing better ways of preventing head injuries.

Other Stanford co-authors are former graduate students Calvin Kuo, PhD, and Fidel Hernandez, PhD; and graduate student Jake Sganga.

Camarillo is a member of Stanford Bio-X, the Stanford Child Health Research Institute and the Stanford Neurosciences Institute.

This research was funded by the Stanford Child Health Research Institute, Stanford Bio-X, the Office of Naval Research and the National Science Foundation.

The Department of Bioengineering, which is jointly managed by the schools of Medicine and of Engineering, also supported the work.

Tagged with:

About author

Related Articles