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September 2017 Feature Article

Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention

Summer 2017

Knapik JJ, Reynolds K, Hoedebecke KL. 17(2). 120 - 130. (Journal Article)

Abstract

Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. Overall stress fracture incidence is about three cases per 1,000 in active duty Servicemembers, but it is much higher among Army basic trainees: 19 per 1,000 for men and 80 per 1,000 for women. Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. Individuals with stress fractures present with focal tenderness and local pain that is aggravated by physical activity and reduced by rest. A sudden increase in the volume of physical activity along with other risk factors is often reported. Simple clinical tests can assist in diagnosis, but more definitive imaging tests will eventually need to be conducted if a stress fracture is suspected. Plain radiographs are recommended as the initial imaging test, but magnetic resonance imaging has higher sensitivity and is more likely to detect the injury sooner. Treatment involves first determining if the stress fracture is of higher or lower risk; these are distinguished by anatomical location and whether the bone is loaded in tension (high risk) or compression (lower risk). Lowerrisk stress fractures can be initially treated by reducing loading on the injured bone through a reduction in activity or by substituting other activities. Higher-risk stress fractures should be referred to an orthopedist. Investigated prevention strategies include modifications to physical training programs, use of shock absorbing insoles, vitamin D and calcium supplementation, modifications of military equipment, and leadership education with injury surveillance.

Keywords:stress fracture; risk factors; diagnosis; treatment

Integrating Military and Civilian Trauma Systems to Achieve Zero Preventable Deaths after Injury

Advances in trauma care have accelerated over the past decade, spurred by the significant burden of injury from the wars in Afghanistan and Iraq. Between 2005 and 2013, the case fatality rate for United States Servicemembers injured in Afghanistan decreased by nearly 50 percent, despite an increase in the severity of injury among U.S. troops during the same period of time. But as the war in Afghanistan ends, knowledge and advances in trauma care developed by the Department of Defense (DoD) over the past decade from experiences in Afghanistan and Iraq may be lost. This would have implications for the quality of trauma care both within the DoD and in the civilian setting, where adoption of military advances in trauma care has become increasingly common and necessary to improve the response to multiple civilian casualty events.

This report documents the remarkable decrease in casualties killed in action during the wars in Iraq and Afghanistan and the role of the Joint Trauma System, the CoTCCC, and the TCCC Working Group in helping to make that happen. It also outlines a clear and comprehensive vision for a National Trauma System that will enable the civilian and the military sectors to work in concert to help prevent ALL potentially preventable deaths in trauma victims.

What Our Readers are Saying

I just finished reading the fall edition of the JSOM and I am completely blown away!!!! It is absolutely packed with exceptional and relevant information that without a doubt, will assist SOF Tactical Health Care professionals in providing relevant and evidence based patient care. Thank you for providing what I consider a "World Class Medical Journal". The journal itself and the website have become my primary resource for knowledge in tactical medicine."

Robert M. Miller
North American Rescue
Chief Innovation Officer

"There is no peer-reviewed academic resource that equals the Journal of Special Operations Medicine for support of the medical and veterinary lead in Stabilization, Security, Transition and Reconstruction (SSTR) operations, combat and field medicine, and adaptation of Tactical Combat Casualty Care into Tactical Emergency Casualty Care for the law enforcement and emergency management community in 195 UN member countries. JSOM is a valuable resource as we continue the Millennium Medicine Project, targeting the global population that lacks access to basic surgical services and providing crisis management, security, and defense support in this demographic."

Stephen M. Apatow
President, Humanitarian Resource Institute
(UN:NGO:DESA) and H-II OPSEC: Defense Support:
Humanitarian and Security Operations

"Military units that have trained all of their members in Tactical Combat Casualty Care have documented the lowest incidence of preventable deaths among their casualties in the history of modern warfare - and JSOM is the first journal to publish every new change in TCCC."

Frank K. Butler, MD
Chairman, Committee on Tactical
Combat Casualty Care (CoTCCC)

"The past 30 years has brought an amazing professionalization of the specialty of Tactical Emergency Medical Support (TEMS). As new standards are set and the world faces increasingly complex security challenges, it is critical that the front line medical providers supporting military, intelligence, and law enforcement operations have a mechanism to expand their knowledge and share best practices. The Journal of Special Operations Medicine offers civilian readers access to the most cutting edge developments in the field including updates on Tactical Emergency Casualty Care (TECC), the National TEMS Imitative and Council (NTIC), and combat lessons learned. JSOM is the one-stop shop for best practice and future advancements in civilian TEMS. One of the unifying principles across humanitarian, expedition and disaster response medical operations is the ability to make complex decisions in uncertain environments. The Journal of Special Operations Medicine is one of the most unique platforms for experts to convey lessons learned and relevant scientific advances across specialties that historically have little interaction. Whether you work for Doctors Without Borders, a DMAT, or provide medical support for expeditions in austere environments, Journal of Special Operations Medicine is your journal."

David W. Callaway, MD
Director, Division of Operational and Disaster Medicine
Operational Medical Director, Carolinas MED-1
Co-Chairman, The Committee for Tactical Emergency Casualty Care (C-TECC)
Civilian Vice President, Special Operations Medical Association (SOMA)