TY - JOUR PY - 2021// TI - Single season re-injury risk after concussion and lower extremity injury among male, collision sport, high school athletes JO - Journal of science and medicine in sport A1 - Wilson, Julie C. A1 - Carry, Patrick M. A1 - Daoud, Ariel Kiyomi A1 - Strunk, Sydney A1 - Sweeney, Emily A. A1 - Howell, David R. A1 - Comstock, R. Dawn SP - ePub EP - ePub VL - ePub IS - ePub N2 - OBJECTIVES: Research suggests that a recent concussion increases subsequent lower extremity injury risk; however, data in high school athletes is limited. This study evaluates the association between concussion and subsequent injury risk among male, collision sport, high school athletes over a single season.

DESIGN: Retrospective cohort study.

METHODS: Data were obtained from 2005/06-2014/15 in the High School Reporting Information Online database. A two stage, multi-method matching process was used to identify athletes who suffered multiple injuries over a single athletic season. Demographics and injury characteristics were compared with Chi square and Student's t-tests. Multiple Cox Proportional Hazards regression analysis was used to test whether index injury type was associated with hazard of subsequent injury following return to play from index injury.

RESULTS: Overall 1364 HS athletes sustained 2 injuries over a single athletic season (subsequent injury within 45 days of the index injury). Index injuries included 686 (50.2%) lower extremity injuries, 417 (30.6%) upper extremity injuries, and 261 (19.1%) concussions. Hazard of subsequent concussion was increased in the index concussion group relative to the index lower extremity injury group [hazard ratio (HR): 1.60, 95% CI: 1.15-2.23, p = 0.0052]. Hazard of a subsequent lower extremity injury was not significantly different for the index lower extremity injury group relative to the index concussion group [HR: 1.27, 95% CI: 0.98-1.65, p = 0.0728].

CONCLUSIONS: History of recent concussion or recent lower extremity injury are both risk factors for subsequent lower extremity injury in male, collision sport, high school athletes.

Language: en

LA - en SN - 1440-2440 UR - http://dx.doi.org/10.1016/j.jsams.2021.04.015 ID - ref1 ER -