Table 1 Selection of relevant independent variables for the stepwise forward regression model

Independent variable	p Value	Included	Reason for inclusion/exclusion
Meniscus injury	0.036	Yes	Additional injuries have previously shown to influence functional outcome.
SF-36 BP sub score	0.074	Yes	Self-assessed pain has previously shown to influence functional outcome.
VAS Global function	0.118	Yes	Self-assessed knee function during activity has previously shown to influence functional outcome.
Triple hop test (injured in percent of uninjured side)	0.218	Yes	Performance on functional hop tests has previously shown to correlate with knee function.
Quadriceps strength 60°/sec (injured in percent of uninjured side)	0.235	Yes	Quadriceps strength has previously shown to influence knee function.
Stair hop test (injured in percent of uninjured side)	0.258	Yes	Performance on functional hop tests has previously shown to correlate with knee function.
Hamstrings strength uninjured side 240°/sec	0.128	No	Hamstrings strength has previously shown to have less impact on knee function than quadriceps strength.
Hamstrings strength injured side 60°/sec	0.249	No	Hamstrings strength has previously shown to have less impact on knee function than quadriceps strength.
Tegner activity scale	0.221	No	Preoperative activity level has not shown to be strongly correlated to long-term function after reconstructive surgery.
KT-1000 manual max side-to-side difference	0.237	No	Static laxity has previously shown to have low correlation to knee function.