Table 1.

Summary of outcomes and assessment schedule

Timepoint	Visits				Follow-up – postal/e-mail questionnaire
	Screening	Enrolment & Baseline	Intervention	Re-assessmenta	6 months	12 months	18 months
Informed consent		X
Patient demographics		X
Medical history		X
Physical examination				Xa
MRI (as part of routine practice)	X
Eligibility assessment	X
Randomisation		X
Adverse event reporting⊥					x	X	X
Treatment: Operation/rehabilitation			X
Questionnaire
Knee Injury and Osteoarthritis Outcome Score (KOOS)		X			Xb	Xb	X
Return to activity/ level of sport participation – modified Tegner		X					X
Health economics – EQ. 5D		X			X	X	X
Complications					X	X	X
Knee-specific patient-reported outcomes, ACL-QOL		X			Xc	Xc	X
Patient satisfaction					Xd	Xd	X

Adverse events can be reported throughout follow-up (e.g., clinical events form, follow-up questionnaires) and in the final readmission check-list

^a Clinical assessment appointment for participants randomised to rehabilitation requiring reassessment due to continued problems with instability

^b Only KOOS4 (Pain, Symptoms, Function in sport and recreation and knee related Quality of life subscales)

^c ACL-QoL – only questions 1–5, 11 and 12

^d Questions about your treatment and your health – 1 question