Table 2.
Summary of ACL Injury Collection and Information for Included Studies a
| Lead Author (Year) | Denominator for Exposure Incidence | No. of ACL Injuries | ACL Injury Incidence | |||
|---|---|---|---|---|---|---|
| Exposures on NG, % | On NG | On AT | On NG | On AT | ||
| Bjørneboe (2010) 5 | 71.47 | Hours | 11 | 3 | 0.075 per 1000 h | 0.04 per 1000 h |
| Calloway (2019) 8 | 75.95 | Games | 30 | 9 | 0.027 per game | 0.026 per game |
| Hägglund (2016) 19 | 85.74 | Hours | 19 | 2 | 0.084 per 1000 h | 0.084 per 1000 h |
| Howard (2020) 23 | 81.36 | AE b | 2947 | 502 | 1.16 per 10,000 AE | 0.92 per 10,000 AE |
| Lanzetti (2017) 26 | 50.78 | Hours | 1 | 0 | 0.76 per 1000 h | 0 per 1000 h |
| Meyers (2013) 29 | 55.46 | Games | 13 | 9 | 0.294 per 10 games | 0.254 per 10 games |
| Meyers (2017) 28 | 50.33 | Games | 2 | 1 | 0.052 per 10 games | 0.026 per 10 games |
a ACL, anterior cruciate ligament; AE, athlete-exposures; AT, artificial turf; NG, natural grass.
b AE was defined as 1 student-athlete participating in 1 National Collegiate Athletic Association–sanctioned practice or competition.