Department of Orthopaedic Surgery, Lenox Hill Hospital, North Shore-LIJ Orthopaedic Institute, North Shore-LIJ Healthcare System, 130 East 77th Street, New York, NY 10075, USA.
Am J Sports Med. 2012 Oct;40(10):2200-5. doi: 10.1177/0363546512458888. Epub 2012 Sep 12.
Players in the National Football League (NFL) sustain injuries every season as the result of their participation. One factor associated with the rate of injury is the type of playing surface on which the players participate.
There is no difference in the rate of knee sprains and ankle sprains during NFL games when comparing rates of those injuries during games played on natural grass surfaces with rates of those injuries during games played on the artificial surface FieldTurf.
Descriptive epidemiology study.
The NFL records injury and exposure (ie, game) data as part of its injury surveillance system. During the 2000-2009 NFL seasons, there were 2680 games (5360 team games) played on grass or artificial surfaces. Specifically, 1356 team games were played on FieldTurf and 4004 team games were played on grass. We examined the 2000-2009 game-related injury data from those games as recorded by the injury surveillance system. The data included the injury diagnosis, the date of injury, and the surface at the time of injury. The injury data showed that 1528 knee sprains and 1503 ankle sprains occurred during those games. We calculated injury rates for knee sprains and ankle sprains-specifically, medial collateral ligament (MCL) sprains, anterior cruciate ligament (ACL) sprains, eversion ankle sprains, and inversion ankle sprains-using incidence density ratios (IDRs). We used a Poisson model and logistic regression odds ratios to validate the IDR analysis. A multivariate logistic regression model was used to adjust the odds ratio for weather conditions.
The observed injury rate of knee sprains on FieldTurf was 22% (IDR = 1.22, 95% confidence interval [CI], 1.09-1.36) higher than on grass, and the injury rate of ankle sprains on FieldTurf was 22% (IDR = 1.22, 95% CI, 1.09-1.36) higher than on grass. These differences are statistically significant. Specifically, the observed injury rates of ACL sprains and eversion ankle sprains on FieldTurf surfaces were 67% (P < .001) and 31% (P < .001) higher than on grass surfaces and were statistically significant. The observed injury rates of MCL sprains and inversion ankle sprains were also not significantly higher on FieldTurf surfaces (P = .689 and .390, respectively).
Injury rates for ACL sprains and eversion ankle sprains for NFL games played on FieldTurf were higher than rates for those injuries in games played on grass, and the differences were statistically significant.
由于参与比赛，美国国家橄榄球联盟（NFL）的球员每个赛季都会受伤。与受伤率相关的一个因素是球员参与比赛的场地类型。
在比较天然草皮表面和人造草皮 FieldTurf 表面比赛中膝盖扭伤和脚踝扭伤的受伤率时，NFL 比赛中不存在差异。
描述性流行病学研究。
NFL 作为其伤害监测系统的一部分，记录伤害和暴露（即比赛）数据。在 2000-2009 年 NFL 赛季期间，有 2680 场比赛（5360 支球队比赛）在草地或人造表面上进行。具体来说，有 1356 场球队比赛在 FieldTurf 上进行，有 4004 场球队比赛在草地上进行。我们检查了伤害监测系统记录的这些比赛中的 2000-2009 年与比赛相关的伤害数据。数据包括伤害诊断、受伤日期和受伤时的场地。伤害数据显示，在这些比赛中发生了 1528 例膝盖扭伤和 1503 例脚踝扭伤。我们使用发病率密度比（IDR）计算了膝盖扭伤和脚踝扭伤的受伤率，具体来说，是内侧副韧带（MCL）扭伤、前交叉韧带（ACL）扭伤、外翻脚踝扭伤和内翻脚踝扭伤。我们使用泊松模型和逻辑回归比值比来验证 IDR 分析。使用多元逻辑回归模型调整天气条件的比值比。
在 FieldTurf 上观察到的膝盖扭伤受伤率为 22%（IDR=1.22，95%置信区间[CI]，1.09-1.36）高于草地上的受伤率，在 FieldTurf 上观察到的脚踝扭伤受伤率为 22%（IDR=1.22，95%CI，1.09-1.36）高于草地上的受伤率。这些差异具有统计学意义。具体来说，在 FieldTurf 表面上观察到的 ACL 扭伤和外翻脚踝扭伤的受伤率分别高出 67%（P<0.001）和 31%（P<0.001），这具有统计学意义。在 FieldTurf 表面上观察到的 MCL 扭伤和内翻脚踝扭伤的受伤率也没有显著升高（P=0.689 和 0.390）。
在 FieldTurf 上进行的 NFL 比赛中，ACL 扭伤和外翻脚踝扭伤的受伤率高于在草地上进行的比赛中的受伤率，差异具有统计学意义。
