Epidemiology of Achilles Tendon Injuries in Collegiate Level Athletes in the United States

CATEGORY: Hindfoot, Sports, Trauma INTRODUCTION/PURPOSE: Achilles tendon rupture is a potentially devastating injury particularly for National Collegiate Athletic Association (NCAA) athletes. Little has been studied regarding the incidence and implications of Achilles tendon ruptures in this patient population. Better characterization of the factors commonly found in athletes who rupture their Achilles may provide clues to aid in their prevention. METHODS: Achilles injuries across 16 sports among NCAA men and women during the 2004-05 to 2013-14 academic years were analyzed using the NCAA Injury Surveillance Program (NCAA-ISP). Achilles tendon rupture rates per 100,000 athlete-exposures (IR), operative rate, annual injury rate trends, re-injury rates, mechanism of injury, in-season status (pre/in/post-season) and time loss distributions were compiled and calculated. A sub-analysis of contact sports and sports played by both genders (C-BG) was performed to determine if there were significant differences in risks in patients who played in contact sports. RESULTS: N=255 Achilles tendon injuries were identified over 10 academic years (IR: 2.17). The injury rate was higher in males compared to females (IR=2.33 vs. 1.89 respectively). Achilles injuries were most common in Men’s Basketball (IR=4.26), Soccer (IR=3.06), and Football (IR=2.69). The top three women’s sports with Achilles injury were Gymnastics (IR=16.73), Basketball (IR=3.32), and Soccer (IR=1.81). Thirty-three injuries were operative (13.1%) and 14.9% (N=38) were season-ending injuries. The average time loss was 10.65 days when excluding patients who had season/career ending injuries. Reinjury rate was 11.0% (N=28). 61.2% of all injuries occurred during the regular season (N=156) with 36.0% (N=92) and 2.7% (N=7) occurring in pre- and post- season, respectively. There was a significantly greater number of injuries in contact (N=198) versus non-contact sports (N=50) (p<0.001). CONCLUSION: Achilles tendon ruptures can be devastating injuries in professional and collegiate athletes. In our study, nearly 15% of all NCAA Achilles tendon ruptures resulted in season ending injuries or significant time loss and over 13% of injuries required operative management with a majority of injuries occurring during practice. In addition, a significantly higher proportion of athletes who played a contact sport had Achilles injuries. Better understanding of what circumstances more often tend to result in Achilles injuries can help establish prevention strategies.