https://www.selleckchem.com/pr....oducts/ono-ae3-208.h
1; 95% confidence interval 1.2, 3.6; P less then .01). Athletes who returned to knee-strenuous sport before 9 months after reconstruction had a higher rate of second ACL injury (hazard ratio = 6.7; 95% confidence interval 2.6, 16.7; P less then .001). There was no association between symmetrical muscle function or quadriceps strength and second ACL injury. CONCLUSION Returning to knee-strenuous sport before 9 months after ACL reconstruction was associated with an approximately 7-fold increased rate of sustaining a second ACL injury.