@article{ref1,
title="No association between return to play after injury and increased rate of anterior cruciate ligament injury in men's professional soccer",
journal="Orthopaedic journal of sports medicine",
year="2016",
author="Lundblad, Matilda and Waldén, Markus and Hägglund, Martin and Ekstrand, Jan and Thomeé, Christoffer and Karlsson, Johanna",
volume="4",
number="10",
pages="e2325967116669708-e2325967116669708",
abstract="BACKGROUND: Studies have shown that previous injury, not necessarily anatomically related, is an important injury risk factor. However, it is not known whether a player runs an increased risk of anterior cruciate ligament (ACL) injury after returning to play from other injury types. <br><br>PURPOSE: To analyze whether professional soccer players are more susceptible to ACL injury after returning to play from any previous injury. STUDY DESIGN: Case-control study; Level of evidence, 3. <br><br>METHODS: A total of 101 elite male soccer players suffering a first-time complete ACL injury between 2001 and 2014 were included and matched according to team, age, and playing position with control players who did not have a current injury (1:1 match). For each injured player, the 90-day period prior to the ACL injury was analyzed for injuries and compared with that of control players by using odds ratios (ORs) and 95% CIs. <br><br>RESULTS: The odds of a player with an ACL injury sustaining a previous injury in the 90-day period did not differ significantly from that of controls (OR, 1.20; 95% CI, 0.66-2.17; P =.65). Testing the frequency of absence periods due to injury between the groups revealed that the odds of a player with an ACL injury having a previous period of absence due to injury did not differ compared with controls (OR, 1.14; 95% CI, 0.64-2.01; P =.77). <br><br>CONCLUSION: Players with ACL injury did not have a greater occurrence of absence due to injury in the 3 months preceding their ACL injury compared with matched controls. This indicates that previous injury of any type does not increase the risk of suffering an ACL injury.<p /> <p>Language: en</p>",
language="en",
issn="2325-9671",
doi="10.1177/2325967116669708",
url="http://dx.doi.org/10.1177/2325967116669708"
}