Table 1 Risk of bias in included studies
RCTs | Random Sequence Generation | Allocation Concealment | Blinding of participants and personnel | Blinding of outcome assessment | Incomplete outcome data | Selective reporting | Other Bias | |
D’Elia et al, Revista Brasileira de Ortopedia 2015 [19] | Low Risk | Low Risk | Unclear Risk | Unclear Risk | Low Risk | Unclear Risk | Unclear Risk | |
Wong et al, Arthroscopy 2013 [20] | Low Risk | Low Risk | Low Risk | Unclear Risk | Low Risk | Low Risk | Unclear Risk | |
Koh et al, Arthroscopy 2014 [21] | Low Risk | Low Risk | Low Risk | Unclear Risk | Low Risk | Low Risk | High Risk | |
Non- RCTs | Confounding | Selection of Participants | Classification of interventions | Deviations from intended interventions | Missing Data | Measurement of outcomes | Selection of reported results | Overall ROB judgements |
Magnanelli et al, Acta Biomedica 2020 [22] | Moderate | Moderate | Low | Low | Low | Low | Low | Moderate |
Kim et al, American Journal of Sports Medicine 2018 [23] | Moderate | Moderate | Low | Low | Low | Low | Low | Moderate |
Lee et al, Arthroscopy: The Journal of Arthroscopic and Related Surgery 2021 [24] | Moderate | Moderate | Low | Low | Low | Low | Low | Moderate |
Jin et al, Knee Surgery, Sports Traumatology, Arthroscopy 2021 [15] | Moderate | Moderate | Low | Low | Low | Low | Low | Moderate |
Yang et al, Knee Surgery, Sports Traumatology, Arthroscopy 2021 [25] | Moderate | Low | Low | Low | Low | Low | Low | Moderate |