Single season re-injury risk after concussion and lower extremity injury among male, collision sport, high school athletes. Issue 11 (November 2021)

• Record Type: Journal Article
• Authors: Wilson, Julie C.; Carry, Patrick M.; Daoud, Ariel Kiyomi; Strunk, Sydney; Sweeney, Emily A.; Howell, David R.; Comstock, R. Dawn
• Is Part Of: Journal of science and medicine in sport. Volume 24:Issue 11(2021)
• Page Start: 1105
• Page End: 1109
• Publication Date: 2021-11
• Subjects: MSK musculoskeletal -- HS high school -- LEI lower extremity injury -- US United States -- RTP return to play -- UEI upper extremity injury -- HS RIO High School Reporting Information Online -- HR hazard ratio; Concussion -- Musculoskeletal injury -- Re-injury -- Adolescent athlete; Sports sciences -- Periodicals; Sports medicine -- Periodicals; Exercise -- Physiological aspects -- Periodicals; Sports -- physiology -- Periodicals; Sports Medicine -- Periodicals; Sportgeneeskunde; 617.102705
• DOI: 10.1016/j.jsams.2021.04.015
• Languages: English
• ISSNs: 1440-2440

Abstract

Abstract: 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.