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J Sci Med Sport. 2014 Jan;17(1):23-8. doi: 10.1016/j.jsams.2013.04.006. Epub 2013 May 17.

Return-to-play probabilities following new versus recurrent ankle sprains in high school athletes.

Author information

1
Department of Rehabilitation Sciences, University of Kentucky, Lexington, KY, USA. Electronic address: jennifer.medina@uky.edu.
2
Department of Biostatistics, University of Kentucky, Lexington, KY, USA.
3
Department of Rehabilitation Sciences, University of Kentucky, Lexington, KY, USA; School of Health Sciences, Kent State University, Kent, OH, USA.
4
Department of Rehabilitation Sciences, University of Kentucky, Lexington, KY, USA; Wando High School, Mount Pleasant, SC, USA.
5
Department of Rehabilitation Sciences, University of Kentucky, Lexington, KY, USA.

Abstract

OBJECTIVES:

Although ankle sprains have the highest recurrence rate of any musculoskeletal injury, objective estimates of when an athlete is likely to return-to-play (RTP) are unknown. The purpose was to compare time to return-to-play probability timelines for new and recurrent ankle sprains in interscholastic athletes.

DESIGN:

Observational.

METHODS:

Ankle sprain data were collected at seven high schools during the 2007-2008 and 2008-2009 academic years. Ankle sprains were categorized by time lost from participation (same day return, next-day return, 3-day return, 7-day return, 10-day return, >22-day return, no return [censored data]). Time-to-event analyses were used to determine the influence of ankle injury history on return-to-play after an ankle sprain.

RESULTS:

204 ankle sprains occurred during 479,668 athlete-exposures, 163 were new (4 censored) and 35 recurrent (1 censored). There was no significant difference (p=0.89) between the time-to-event curves for new and recurrent ankle sprains. The median (inter-quartile rage) time to return-to-play for new sprains (inter-quartile range)=3 days (same day to 7 day return); recurrent sprains=next day return (next day to 7 day return). Noteworthy probabilities [95% CIs] include: same day return (new=25.2[18.7, 31.9], recurrent=17.1[6.6, 30.3]); next-day return (new=43.6[35.3, 52.7], recurrent=51.4[32.5, 67.5]); and 7-day return (new=85.9[73.8, 94.4], recurrent=94.3[47.8, 99.5]).

CONCLUSIONS:

Previous injury history did not affect time until return-to-play probabilities for ankle sprains. Time until return-to-play analyses that describe the likelihood of return-to-play are useful to clinicians by providing prognostic guidelines and can be used for educating athletes, coaches, and parents about the likely timeframe of being withheld from play.

KEYWORDS:

Ankle sprain; Epidemiology; High school; Injury surveillance; Lower extremity; Recurrent injury

PMID:
23689105
DOI:
10.1016/j.jsams.2013.04.006
[Indexed for MEDLINE]
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