Table 1.

PubMed search

1)	Anterior cruciate ligament[mesh terms] OR Anterior cruciate ligament injury[mesh terms] OR Anterior cruciate ligament reconstruction[mesh terms]
2)	Anterior cruciate ligament Or ACL
3)	Prognosis[mesh terms]
4)	Prognosis OR Prognostic factors OR Prognostic factor OR Predictor OR Predictors OR Predict OR Prediction OR Predictive OR Effect modifiers OR Effect modifier OR Risk factors OR Risk factor OR Factor OR Factors OR Associated OR Association OR Associations
5)	Return to sport[mesh terms]
6)	Return to sport OR Return to sports OR Participation OR Activity level OR Physical activity OR "Tegner activity scale" OR "Marx activity rating scale" OR Return to play OR KOOS OR "Knee injury and Osteoarthritis Outcome score" OR "International Knee Documentation Committee subjective knee form" OR "IKDC-SKF 2000" OR IKDC-SKF2000 OR "International Knee Documentation Committee Subjective Knee Evaluation Form" OR "IKDC-SKF" OR "Knee Outcome Survey" OR KOS
7)	Prospective studies[mesh terms]
8)	Prospective studies OR Prospective study OR Observational study OR Cohort study OR Randomized controlled trial OR Randomized clinical trial OR Randomised controlled trial OR Randomised clinical trial OR RCT OR Randomised trial OR Randomized trial
9)	1 OR 2
10)	3 OR 4
11)	5 OR 6
12)	7 OR 8
13)	9 AND 10 AND 11 AND 12