ACTRN12616001082493.

Study name	Effectiveness of foot orthoses in children with juvenile idiopathic arthritis: a randomised control trial
Methods	Randomised controlled two‐arm trial ‐ 12 months
Participants	Children with juvenile idiopathic arthritis (JIA) 1. Diagnosed with JIA according to ILAR (International League of Associations for Rheumatology) criteria 2. Age 5 to 18 years old 3. Active lower‐limb joint arthritis involvement 4. No previous use of foot orthoses, or previous failure of foot orthotic management, where the patient has not worn any foot orthoses (FO) for a period of at least 3 months 5. Ability to walk a minimum of 15 meters without assistive devices 6. If disease‐modifying antirheumatic drugs (DMARD), biological therapy, or both are used, not having started these drug therapies within 6 months of enrolling in the trial
Interventions	Customised prefabricated foot orthoses (PFO), sham insole (control)
Outcomes	pain, disability, quality of life
Starting date	not stated
Contact information	www.who.int/trialsearch/Trial2.aspx?TrialID=ACTRN12616001082493
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