Publications by authors named "Daniel R Clifton"

Article Synopsis
  • Lower extremity chronic exertional compartment syndrome (LE-CECS) is a condition that affects physical activity, notably in military personnel, and fasciotomy (a surgical treatment) may influence military service separations.
  • A study of over 1 million active-duty service members from 2011 to 2017 found that LE-CECS significantly increases the risk of medical and nonmedical separations, especially in men and women undergoing certain surgical procedures.
  • The results suggest that while LE-CECS leads to higher discharge risks, fasciotomy does not appear to improve long-term military careers, highlighting the need for further research on this issue.
View Article and Find Full Text PDF

Introduction: Chronic pain and associated interference with daily activities are common in the military and impact Force readiness. Chronic pain affects one-third of service members and is a leading cause of medical non-readiness (MNR) in the military. Research suggests that underlying psychological mechanisms related to trait coping styles and pain interference (PI) affect functional outcomes, but little research exists examining this relationship within an Army population.

View Article and Find Full Text PDF

Context: The US Army embedded injury-prevention experts (IPEs), specifically athletic trainers and strength and conditioning coaches, into initial entry training (IET) to limit musculoskeletal (MSK) conditions and their negative consequences. However, little is known about the financial impact of IPEs.

Objective: To assess whether IPEs were associated with fewer sunk training costs due to MSK-related early discharges from service.

View Article and Find Full Text PDF

Tri-plane corrective Lapidus surgery has been described as advantageous with respect to its anatomic basis and outcomes. Because the procedure has been broadly publicized, changes in overall Lapidus procedure rates due to increased numbers of patients opting for the tri-plane approach could have occurred. Data supporting this possibility appears lacking.

View Article and Find Full Text PDF

To describe health-related behaviors or indicators associated with overall health and well-being using the Global Assessment Tool (GAT), a health behavior and psychosocial questionnaire completed annually by US Army personnel. We analyzed GAT responses from 2014 to 2018, consisting of 367 000 to 449 000 respondents per year. We used generalized estimating equations to predict the presence of each health behavior or indicator, aggregated by year and stratified on various demographics.

View Article and Find Full Text PDF

Introduction: Minimising temporary and permanent disability associated with musculoskeletal conditions (MSK-D) is critical to the mission of the US Army. Prior research has identified potentially actionable risk factors for overall military disability and its MSK-D subset, including elevated body mass index, tobacco use and physical fitness. However, prior work does not appear to have addressed the impact of these factors on MSK-D when controlling for a full range of factors that may affect health behaviours, including aptitude scores that may serve as a proxy for health literacy.

View Article and Find Full Text PDF

Introduction: Musculoskeletal injuries (MSK-I) in the U.S. military accounted for more than four million medical encounters in 2017.

View Article and Find Full Text PDF

Context: The advent of Web-based sports injury surveillance via programs such as the High School Reporting Information Online system and the National Collegiate Athletic Association Injury Surveillance Program has aided the acquisition of girls' and women's basketball injury data.

Objective: To describe the epidemiology of injuries sustained in high school girls' basketball in the 2005-2006 through 2013-2014 academic years and collegiate women's basketball in the 2004-2005 through 2013-2014 academic years using Web-based sports injury surveillance.

Design: Descriptive epidemiology study.

View Article and Find Full Text PDF

Context: The advent of Web-based sports injury surveillance via programs such as the High School Reporting Information Online system and the National Collegiate Athletic Association Injury Surveillance Program has aided the acquisition of boys' and men's basketball injury data.

Objective: To describe the epidemiology of injuries sustained in high school boys' basketball in the 2005-2006 through 2013-2014 academic years and collegiate men's basketball in the 2004-2005 through 2013-2014 academic years using Web-based sports injury surveillance.

Design: Descriptive epidemiology study.

View Article and Find Full Text PDF

Background: Upper extremity injuries commonly occur in baseball players, and can often necessitate surgical interventions. Athletes recovering from previous surgeries may be at greater risk of a secondary injury due to potential residual deficits in global movement. Identifying individuals with residual movement dysfunction following surgery during a pre-participation examination may help health care professionals identify baseball players who may be at a greater risk of re-injury in their throwing arms so that appropriate interventions can be developed.

View Article and Find Full Text PDF

Context:: Data regarding the epidemiology of emergency-transport incidents (ETIs) of patients with sport-related injuries are lacking. Understanding the use of emergency services by athletic trainers can help improve emergency preparedness and prehospital care for injured student-athletes.

Objective:: To determine the frequencies and types of ETIs resulting from athletic participation.

View Article and Find Full Text PDF

Objective: To compare the epidemiology of concussion between athletes who are deaf or hard-of-hearing (D/HoH) and athletes who are hearing.

Design: Descriptive epidemiology study.

Setting: Data were collected from 2 Division III athletic programs.

View Article and Find Full Text PDF

Context:   The fourth edition of the Preparticipation Physical Evaluation recommends functional testing for the musculoskeletal portion of the examination; however, normative data across sex and grade level are limited. Establishing normative data can provide clinicians reference points with which to compare their patients, potentially aiding in the development of future injury-risk assessments and injury-mitigation programs.

Objective:   To establish normative functional performance and limb-symmetry data for high school-aged male and female athletes in the United States.

View Article and Find Full Text PDF

Background: The shoulder mobility screen of the Functional Movement Screen™ (FMS™) and the upper extremity patterns of the Selective Functional Movement Assessment (SFMA) assess global, multi-joint movement capabilities in the upper-extremities. Identifying which assessment can most accurately determine if baseball players are at an increased risk of experiencing overuse symptoms in the shoulder or elbow throughout a competitive season may reduce throwing-related injuries requiring medical attention.

Purpose: The purpose of this study was to determine if preseason FMS™ or SFMA scores were related to overuse severity scores in the shoulder or elbow during the preseason and competitive season.

View Article and Find Full Text PDF

Context:   Variations in knee-sprain incidence among competition levels are unclear but may help inform prevention strategies in American football players.

Objective:   To describe the epidemiology of knee sprains in youth, high school, and collegiate football players.

Design:   Descriptive epidemiology study.

View Article and Find Full Text PDF

Background: Variations in ankle injury rates and distributions among competition levels are unclear, but such data may help inform strategies to prevent ankle sprains during American football.

Purpose: To describe the epidemiological patterns of ankle sprains in youth, high school (HS), and collegiate American football.

Study Design: Descriptive epidemiological study.

View Article and Find Full Text PDF

Context: Musculoskeletal injury-prediction methods vary and may have limitations that affect the accuracy of results and clinical meaningfulness.

Background: Research examining injury risk factors is meaningful, but attempting to extrapolate injury risk from studies that do not prospectively assess injury occurrence may limit clinical applications. Injury incidence is a vital outcome measure, which allows for the appropriate interpretation of injury-prediction analyses; a lack of injury-incidence data may decrease the accuracy and increase the uncertainty of injury-risk estimates.

View Article and Find Full Text PDF

Objective: A stated goal of the preparticipation physical evaluation (PPE) is to reduce musculoskeletal injury, yet the musculoskeletal portion of the PPE is reportedly of questionable use in assessing lower extremity injury risk in high school-aged athletes. The objectives of this study are: (1) identify clinical assessment tools demonstrated to effectively determine lower extremity injury risk in a prospective setting, and (2) critically assess the methodological quality of prospective lower extremity risk assessment studies that use these tools.

Data Sources: A systematic search was performed in PubMed, CINAHL, UptoDate, Google Scholar, Cochrane Reviews, and SportDiscus.

View Article and Find Full Text PDF

Background: The Functional Movement Screen (FMS™) has been suggested for use in predicting injury risk in active populations, but time constraints may limit use of the screening test battery. Identifying one component of the FMS™ that can predict which individuals may perform poorly on the entire test, and therefore should undergo the full group of screening maneuvers, may reduce time constraints and increase pre-participation screening utilization.

Purpose: The purpose of this study was to determine if performance on the FMS™ overhead deep squat test (DS) could predict performance on the entire FMS™.

View Article and Find Full Text PDF

The Functional Movement Screen (FMS) is currently used for injury risk prediction, although researchers have not studied its relationships to injury risk factors. The purpose of this study was to compare FMS scores at rest to changes in static balance after exercise. Second, we examined FMS scores pre and post exercise.

View Article and Find Full Text PDF