Variables extracted for analysis
| Primary variables | ICF participation domain | Return to any sport Return to preinjury sport Return to competitive sport |
| Secondary variables | ICF impairments and activity domains (physical functioning) | Objective knee function (IKDC evaluation) Subjective knee function (IKDC form) Hopping performance (hop distance) Sport-specific activity participation frequency (Marx Activity Scale) |
| ICF contextual factors | Person-related factors | |
| Age Gender Psychological response | ||
| Surgery-related factors | ||
| Autograft type (hamstring tendon vs patellar tendon) | ||
| Other factors | ||
| Sports performance level (elite vs non-elite) Length of follow-up (<12; 12–36; >36 months) | ||
ICF, International Classification of Functioning, Disability, and Health; IKDC, International Knee Documentation Committee.