Keller Army Hospital, United States Military Academy, West Point, NY 10996, USA.
J Athl Train. 2010 Jan-Feb;45(1):29-38. doi: 10.4085/1062-6050-45.1.29.
Ankle sprains have been reported as one of the most common injuries sustained by members of the US Armed Services. However, little is known about the incidence rate and injury patterns associated with ankle sprains in this population.
To examine the incidence of ankle sprains among active-duty members of the US Armed Services from 1998 through 2006. A secondary objective was to describe the sex, age, and service-specific injury patterns in this young, physically active population.
Cohort study.
All active-duty service members from the day they enter military service until the day they leave military service and US Army Reserve and National Guard service members during periods of active duty and mobilization.
MAIN OUTCOME MEASURE(S): Injury data were extracted from the Defense Medical Epidemiological Database from 1998 through 2006. All data for ankle sprains, coded according to the International Classification of Diseases (9th revision), were included. Cases were limited to those injuries reported as first occurrences. Incidence rates (IRs) were calculated per 1000 person-years by sex, age, and service. Incidence rate ratios (IRRs) and 95% confidence intervals (95% CIs) were used to assess the strength of association between the incidence of ankle sprain and the independent variables of sex, age, and service.
From 1998 through 2006, 423 581 service members sustained ankle sprains and 12 118 863 person-years at risk to injury were documented in this population. The incidence rate was 34.95 (95% CI = 34.85, 35.06) per 1000 person-years at risk. Females were 21% more likely (IRR = 1.21, 95% CI = 1.21, 1.23) to sustain an ankle sprain than males. Sex-specific IR varied by age and service. Differences in the rate of ankle sprains were also noted by age and service.
The incidence of ankle sprains among US service members was 5 times greater than that previously reported in civilian population studies. Sex, age, and branch of military service are important factors related to the incidence of ankle sprains in this population.
踝关节扭伤是美国武装部队成员中最常见的损伤之一。然而，对于该人群中踝关节扭伤的发生率和损伤模式知之甚少。
检查 1998 年至 2006 年期间美国现役武装部队成员踝关节扭伤的发生率。次要目的是描述这个年轻、活跃人群中性别、年龄和特定服务的损伤模式。
队列研究。
所有现役军人，从入伍之日起至退伍之日止，以及美国陆军预备役和国民警卫队在现役和动员期间的现役军人。
1998 年至 2006 年期间，从国防医疗流行病学数据库中提取损伤数据。所有按照国际疾病分类（第 9 版）编码的踝关节扭伤数据均包括在内。病例仅限于首次报告的损伤。通过性别、年龄和服务计算每 1000 人年的发生率（IR）。使用发病率比（IRR）和 95%置信区间（95%CI）评估踝关节扭伤发生率与性别、年龄和服务等独立变量之间的关联强度。
1998 年至 2006 年期间，423581 名军人发生踝关节扭伤，该人群中有 12118863 人年面临受伤风险。发病率为每 1000 人年 34.95（95%CI=34.85，35.06）。女性发生踝关节扭伤的可能性比男性高 21%（IRR=1.21，95%CI=1.21，1.23）。性别特异性 IR 随年龄和服务而变化。年龄和服务也存在踝关节扭伤率的差异。
美国军人踝关节扭伤的发生率是以前在平民人群研究中报告的 5 倍。性别、年龄和军种是该人群中踝关节扭伤发生率的重要因素。
