Variables Affecting Return to Play After Anterior Cruciate Ligament Injury in the National Football League.
BACKGROUND
Anterior cruciate ligament (ACL) injuries are common in the National Football League (NFL). Limited literature exists regarding return to play (RTP) and the factors affecting RTP after ACL reconstruction in NFL players.


OBJECTIVE
To determine RTP rates after ACL reconstruction in NFL players and to ascertain which variables affect RTP in these players. We hypothesized that RTP in this population will be less than in the general population and similar to the limited studies published previously.


METHODS
Case-control study; Level of evidence, 3.


METHODS
A total of 92 NFL athletes who sustained ACL injuries requiring ACL reconstruction from 2013 to 2015 were retrospectively studied to determine rate of RTP and the variables affecting RTP.


RESULTS
Sixty-two percent (57/92) of NFL athletes returned to NFL game play prior to the end of the 2015-2016 postseason. ACL injuries were noted in 10 different player positions, with 81.5% of all injuries as isolated ACL injuries (75/92) and 18.5% with concomitant knee injuries. A significant difference in ability to RTP was found for players who sustained in-season injuries compared with those who sustained off-season/preseason injuries (P= .02). No significant differences in RTP were found for players who played less than 4 years in the NFL compared with those who played longer. The mean draft round of players who returned was 3.96, with the odds ratio favoring RTP at 4.44 (P= .003) for players drafted in the first 3 rounds of the NFL draft compared with those drafted in the fourth round or later. No significant differences were found with regard to playing surface, laterality, concomitant injury, previous ipsilateral or contralateral ACL reconstruction, final outcome of the game, or contact compared with noncontact injuries.


CONCLUSIONS
The RTP rates we reported after ACL reconstruction in NFL players are similar to prior studies; however, running backs and wide receivers had lower rates of RTP than previously reported. As previously published, quarterbacks were found to have high RTP rates. Most ACL injuries take place during the preseason or early regular season. Early selection in the NFL draft was a strong predictor of ability to RTP.
William Beaumont Army Medical Center, El Paso, Texas, USA.; Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA.
Emmanuel D
ED
Eisenstein
Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA.
Nathaniel L
NL
Rawicki
William Beaumont Army Medical Center, El Paso, Texas, USA.; Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA.
Nicholas J
NJ
Rensing
William Beaumont Army Medical Center, El Paso, Texas, USA.; Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA.
Nicholas A
NA
Kusnezov
William Beaumont Army Medical Center, El Paso, Texas, USA.; Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA.
Joseph T
JT
Lanzi
NFL athletes; anterior cruciate ligament reconstruction; knee injury; return to play