“…In the Australian Football League, ACL injury has accounted for 12.1 games missed per club per season over the past 10 years, second only to hamstring strain injury (21.1 games per club per season) (Orchard et al, 2013). Furthermore, the incidence rate of one new ACL injury per club per season is low (Orchard et al, 2013), although, an ACL injury typically requires a minimum of 9 to 12 months out of sport for complete recovery (Ardern, Webster, Taylor, & Feller, 2011a;Ardern, Webster, Taylor, & Feller, 2011b;Webster, Feller, & Whitehead, 2017), so these injuries are markedly more severe than hamstring strains as they result in a longer time out of sport and have more severe long term implications such as knee osteoarthritis. The highest frequencies of ACL injury are in intermittent-sprint team sports that involve pivoting, cutting, sudden deceleration, jumping and landing (Bahr & Krosshaug, 2005;Boden, Dean, Feagin, & Garrett, 2000;Renstrom et al, 2008).…”