Summary of data items to be extracted from included studies
| Content | Data items |
| General study information | Title, authors names, publication date. |
| Study characteristics | Sample size, study design, duration of follow-up, country. |
| Patient characteristics | Age, gender. |
| Type of intervention/ACL reconstruction | Graft site choice, type of graft. |
| Physical prognostic factors | Examples include but not limited to: quadriceps strength, knee range of motion, concomitant meniscal injuries, concomitant articular cartilage injuries, level of preoperative pain, degree of preoperative ACL laxity, preinjury activity levels, history of previous knee surgery, ACL rupture location, ACL graft type, ACL graft site, BMI, smoking status, time from injury to surgery, age and gender. |
| Outcome (encompassing patient-reported outcome measures / performance-based outcome measures) | Patient-reported outcome measures for example, IKDC, KOOS, Tegner Activity Scale, Lysholm Knee Scoring Scale and the Cincinnati Knee Rating System. Performance-based outcome measures for example, return to sport and/or a previous level of activity, hop tests, quadricep strength. |
| Results | Main findings, statistical analysis methods. |
| Other information deemed relevant | Conflicts of interest, any other details deemed relevant. |
ACL, anterior cruciate ligament; BMI, body mass index; IKDC, International Knee Documentation Committee; KOOS, Knee Injury and Osteoarthritis Outcome Score.