John J Fraser1, Andrew J MacGregor2, Camille P Ryans3, Mark A Dreyer4, Michael D Gibboney5, Daniel I Rhon6. 1. Foot & Ankle Subcommittee, Neuromusculoskeletal Clinical Community Advisory Board, US Navy Bureau of Medicine and Surgery, Falls Church, VA, USA; Warfighter Performance Department, Directorate for Operational Readiness & Health, Naval Health Research Center, San Diego, CA, USA. Electronic address: john.j.fraser8.mil@mail.mil. 2. Foot & Ankle Subcommittee, Neuromusculoskeletal Clinical Community Advisory Board, US Navy Bureau of Medicine and Surgery, Falls Church, VA, USA; Medical Modeling, Simulation, and Mission Support Department, Naval Health Research Center, San Diego, CA, USA. 3. Foot & Ankle Subcommittee, Neuromusculoskeletal Clinical Community Advisory Board, US Navy Bureau of Medicine and Surgery, Falls Church, VA, USA; Department of Orthopedic Surgery, Naval Hospital Jacksonville, Jacksonville, FL, USA. 4. Foot & Ankle Subcommittee, Neuromusculoskeletal Clinical Community Advisory Board, US Navy Bureau of Medicine and Surgery, Falls Church, VA, USA; Podiatry Clinic, Naval Health Clinic New England, Newport, RI, USA. 5. Foot & Ankle Subcommittee, Neuromusculoskeletal Clinical Community Advisory Board, US Navy Bureau of Medicine and Surgery, Falls Church, VA, USA; Orthopedics Department, Naval Medical Center Camp Lejeune, Camp Lejeune, NC, USA. 6. Physical Performance Service Line, G-3/5/7, US Army Office of the Surgeon General, Falls Church, VA, USA; Center for the Intrepid, Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, San Antonio, TX, USA.
Abstract
OBJECTIVES: To assess the risk of lateral ankle sprain (LAS) in male and female tactical athletes across different military occupations in the US military. DESIGN: Retrospective cohort. METHODS: The Defense Medical Epidemiology Database was queried for the number of individuals with ICD-9 diagnosis codes 845.00 (sprain of ankle, unspecified) and 845.02 (calcaneofibular ligament sprain) on their initial encounter from 2006 to 2015. Relative risk (RR) and chi-square statistics were calculated assessing sex and occupational category on LAS risk. RESULTS: 272,970 enlisted males (27.9 per 1000 person-years), 56,732 enlisted females (34.5 per 1000 person-years), 24,534 male officers (12.6 per 1000 person-years), and 6020 female officers (16.4 per 1000 person-years) incurred a LAS. Enlisted females in all occupational groups were at significantly higher risk for LAS than their male counterparts (RR 1.09-1.68; p<0.001), except for Engineers (p=0.15). Female officers had consistently higher risk for LAS in all occupational groups (RR 1.10-1.42; p<0.001) compared with male officers, except Ground/Naval Gunfire (p=0.23). Contrasted with Infantry, enlisted tactical athletes in the Special Operations Forces, Mechanized/Armor, Aviation, Maintenance, and Maritime/Naval Specialties were at lower risk (RR 0.38-0.93; p<0.001), Artillery, Engineers, and Logistics Specialties were at higher risk (RR 1.04-1.18; p<0.001), and Administration, Intelligence, and Communications were no different (p=0.69). Compared with Ground/Naval Gunfire officers, Aviation officers were at significantly lower risk (RR, 0.75; p<0.001), and Engineers, Maintenance, Administration, Operations/Intelligence, and Logistics officers were at higher risk (RR, 1.08-1.20; p<0.001). CONCLUSIONS: Sex and military occupation were salient factors associated with LAS risk. Published by Elsevier Ltd.
OBJECTIVES: To assess the risk of lateral ankle sprain (LAS) in male and female tactical athletes across different military occupations in the US military. DESIGN: Retrospective cohort. METHODS: The Defense Medical Epidemiology Database was queried for the number of individuals with ICD-9 diagnosis codes 845.00 (sprain of ankle, unspecified) and 845.02 (calcaneofibular ligament sprain) on their initial encounter from 2006 to 2015. Relative risk (RR) and chi-square statistics were calculated assessing sex and occupational category on LAS risk. RESULTS: 272,970 enlisted males (27.9 per 1000 person-years), 56,732 enlisted females (34.5 per 1000 person-years), 24,534 male officers (12.6 per 1000 person-years), and 6020 female officers (16.4 per 1000 person-years) incurred a LAS. Enlisted females in all occupational groups were at significantly higher risk for LAS than their male counterparts (RR 1.09-1.68; p<0.001), except for Engineers (p=0.15). Female officers had consistently higher risk for LAS in all occupational groups (RR 1.10-1.42; p<0.001) compared with male officers, except Ground/Naval Gunfire (p=0.23). Contrasted with Infantry, enlisted tactical athletes in the Special Operations Forces, Mechanized/Armor, Aviation, Maintenance, and Maritime/Naval Specialties were at lower risk (RR 0.38-0.93; p<0.001), Artillery, Engineers, and Logistics Specialties were at higher risk (RR 1.04-1.18; p<0.001), and Administration, Intelligence, and Communications were no different (p=0.69). Compared with Ground/Naval Gunfire officers, Aviation officers were at significantly lower risk (RR, 0.75; p<0.001), and Engineers, Maintenance, Administration, Operations/Intelligence, and Logistics officers were at higher risk (RR, 1.08-1.20; p<0.001). CONCLUSIONS: Sex and military occupation were salient factors associated with LAS risk. Published by Elsevier Ltd.
Entities:
Keywords:
Ankle injuries; Military personnel; Occupational injuries; Public health; Sports medicine
Authors: Elizabeth Russell Esposito; Shawn Farrokhi; Benjamin R Shuman; Pinata H Sessoms; Eliza Szymanek; Carrie W Hoppes; Laura Bechard; David King; John J Fraser Journal: JMIR Res Protoc Date: 2022-06-22