Preparing a consultation on your smartphone: a randomized controlled trial to evaluate the effect of an e-Health application for patients with hip and/or knee osteoarthritis

INTERVENTION: a patient‐friendly online (and smartphone) application “BART‐online” (i.e. Beating osteoARThritis, in Dutch “Artrose Wijzer©”). The application is aimed at preparation of a first consultation with an orthopaedic surgeon. The main functionalities of the application include: ‐ Information on OA and treatment modalities, costumed to a stepped‐care strategy. ‐ The option to keep a record of scheduled consultations with health care providers. Patients can answer questions (pre‐defined for different health care professionals) to prepare for a consultation and record questions they have for their health care professional. CONDITION: Arthrosis, Osteoarthritis ; ; PRIMARY OUTCOME: Patients' experience with consultation SECONDARY OUTCOME: ‐ Questions asked during consultation ; ; ‐ Outcome of the consultation ; ; ‐ Knowledge on OA and treatment options ; ; ‐ Usability of the application ; ; ‐ Use of the application INCLUSION CRITERIA: ‐ An age of 18 years or older ‐ Diagnosed or suspicion of OA in the knee and/or hip ‐ Primary visit to the orthopaedics department ‐ The ability to read and understand the Dutch language