title: The epidemiology of ankle injuries occurring in English Football Association academies.
abstract: OBJECTIVE
  To ascertain the epidemiology of ankle injuries in elite youth football.
  
  
  METHODS
  Retrospective analysis of prospectively collected injury data from English Football Association (FA) academies.
  
  
  METHODS
  Forty-one FA football academies, between 1998 and 2006.
  
  
  METHODS
  For the complete seasons studied, a total of 14 776 players was registered from U9 to the U16 age category, a mean of 2463 players per year. All ankle injuries of sufficient severity to miss 48 h or more of training were studied, 2563 injuries in total.
  
  
  METHODS
  The incidence and burden of ankle injuries in this population and factors associated with injury.
  
  
  RESULTS
  There was a mean incidence of one ankle injury per player per year, and a mean of 20 training days and two matches were missed per ankle injury. Increased injury rates were seen in older players, in competition and later in each half of match time. Peaks in injury were observed early in the season and after the winter break. In competition, more injuries were associated with a contact situation than in training. Eighty-eight injuries (3.4%) required a lay-off of 3 months or more and in 18 (0.7%) cases the player failed to return to training. In total, 52 290 training days and 5182 match appearances were lost through ankle injury. The majority of injuries were sprains, but more severe injuries occurred accounted for 3.9% of the total.
  
  
  CONCLUSIONS
  Ankle injuries are common in young football players and are often severe, with prolonged loss of training time. This has potential far-reaching implications, both on and off the field.
authors.affiliation: University of Bath, School for Health, Bath, UK. clokes@talktalk.net
authors.forename: D J
authors.initials: DJ
authors.lastname: Cloke
authors.forename: S
authors.initials: S
authors.lastname: Spencer
authors.forename: A
authors.initials: A
authors.lastname: Hodson
authors.forename: D
authors.initials: D
authors.lastname: Deehan
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D000704:Analysis of Variance; D016512:Ankle Injuries / Q000453:epidemiology* / Q000209:etiology; D002648:Child; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D011446:Prospective Studies; D012008:Recurrence; D012017:Referral and Consultation; D012916:Soccer / Q000293:injuries*; D013997:Time Factors