Table 1.

Data collection time points

Time point	Data collection
Baseline	Demographics, physical activity (UCLA Activity Scale),29 iHOT-33, SF-12,EQ-5D Preoperative imaging, economics questionnaire
Intervention	Operation notes and photographs; or PHT log. Complications records 6 weeks post start of intervention. Postoperative MRI (surgery intervention only)
6 months	iHOT-33, SF-12, EQ-5D, resource usage, adverse events
12 months (primary outcome)	iHOT-33, SF-12, EQ-5D, patient satisfaction, resource usage, adverse events
2 years	Further procedures questionnaire
3 years	Further procedures questionnaire
5 and 10 years	Linkage to National Joint Registry and HES to identify need for hip replacement