Table 2 Return-to-play assessment

VAS score = 0

IKDC score > 90

No active effusion (Brush test negative)

The difference in circumference between the quadriceps muscles was less than 1.5 cm

The knee isokinetic strength test showed a ratio of bilateral quadriceps muscles greater than 90%, bilateral hamstrings greater than 90%, and unilateral hamstrings to quadriceps muscle greater than 66%

Jump test Limb symmetry index (LSI = jump distance on the affected side/jump distance on the healthy side *100%) was greater than 90%, and the test items included a single-leg long jump test and a single-leg triple jump test

Y-word balance test: bilateral extension asymmetry within 4 cm; bilateral comprehensive score is greater than 90%

Lateral step-down test showed no dynamic genu valgus