Table 1 Core domains of tendinopathy as defined by the ICON group [2019, 23].

Domain	Description/definition	Example outcome
Patient rating of condition	A single assessment numerical evaluation	Rate your tendon status where 100% is no problems and 0% worst case scenario, global rating of change, patient acceptable symptom status
Participating in life activities	Patient rating of the level of participating	Ratings of level of sport and time to return to sport
Pain on activity/loading	Patient reported intensity of pain on performing a task/activity that loads the tendon	VAS or NRS for pain intensity when the patient performs a tendon-specific pain-provocative task
Function	Patient rated level of function (and not referring to the intensity of their pain)	Patient Specific Function Scale on a VAS or NRS
Psychological factors	Psychology	Pain self-efficacy, pain catastrophisation, kinesiophobia, anxiety or depression scales
Physical function capacity	Quantitative measures of physical tasks performed in clinic	Number of hops, timed stair walk, number of single limb squats, including dynamometry and wearable technology
Disability	Composite scores of a mix of patient-rated pain and disability due to the pain, usually to tendon-specific activities/tasks	VISA scales, patient-rated tennis elbow evaluation, disability of the arm, shoulder and hand
Quality of life	The general well-being of the individual	Specific QoL questionnaires such as European QoL – 5 Dimension (EQ-5D) Australian QoL (AQoL), 36-item Short Form survey (SF-36)
Pain over a specified time	Participant reported pain intensity over a period of time (morning, night, 24 hours, a week)	VAS, NRS