“…PROMs in relation to RTS were evaluated in 10 studies, as is shown in Additional file 2 , Table 4 [ 3 , 4 , 9 , 12 , 18 , 21 , 23 , 30 , 36 , 44 ]. The IKDC Subjective Knee Evaluation Form [ 21 , 36 , 44 ] and the ACL-RSI [ 4 , 9 , 23 ] are evaluated most frequently, followed by the Tegner Activity Scale [ 3 , 4 ]. Of the paediatric PROMs, the Pedi-IKDC is tested in one study [ 9 ].…”