Table 3

Explanatory variables

Categories of criteria	Explanatory variables	Unit or range	Calculated data
	Marx preinjury	0–16
	Tegner preinjury	0–10
Self-reported measures	IKDC	0–100
	TSK11	11–55
	SANE	0–100
Postural control analysis	Centre of pressure (CoP)	mm
	CoP velocity	mm/s
	CoP area	mm²
Knee laxity measurements	GnRB slope	mm
Knee laxity measurements	GnRB anteroposterior displacement	mm
SEBT	Anterior distance	m
	Posterolateral distance	m
	Posterolateral distance	m
	Composite SEBT score	%	X
Running and sprinting mechanics	LSI Leg stiffness	%	X
	LSI stride length	%	X
	LSI sprint vertical force	%	X
	LSI sprint horizontal force	%	X
	LSI sprint total force	%	X
	LSI sprint ratio of forces	%	X
	LSI sprint DRF	%	X
Hop Tests	LSI Single One-Leg Hop Test	%	X
	LSI Triple One-Leg Hop Test	%	X
	LSI Cross-over One-Leg Hop Test	%	X
Isokinetic assessment	Quadriceps peak torque at 60°/s BW	N/kg
	Quadriceps peak torque at 240°/s BW	N/kg
	Quadriceps peak torque at 30°/s BW	N/kg
	Hamstring peak torque at 60°/s BW	N/kg
	Hamstring peak torque at 240°/s BW	N/kg
	Hamstring peak torque at 30°/s BW	N/kg
	Mixed functional ratio	%	X
Follow-up	Marx 3 years postop	0–16
	Tegner 3 years postop	0–10
	SANE 3 years postop	0–100

LSI=operated leg/healthy leg; Mixed functional ratio=IJ30/Q240 (with IJ30 the Hamstring peak torque at 30°/s of isokinetic assessment, and Q240 the Quadriceps peak torque at 240°/s of isokinetic assessment).
BW, body weight; IKDC, International Knee Documentation Committee; LSI, Limb Symmetry Index; postop, postoperative; SANE, Single Assessment Numeric Evaluation; SEBT, Star Excursion Balance Test; TSK11, Tampa Scale of Kinesiophobia-11.