Clinical Research Directory

Inclusion Criteria: * Patients aged between 40 and 85 years with uni or bilateral knee osteoarthritis according to EULAR (European League Against Rheumatism) criteria, symptomatic and diagnosed prior to inclusion by a specialist or not. * Having an involvement of at least one knee. * Own a smartphone or tablet running at least Android 5 or iOS 11. * Able to give written consent to participate in the study. * Beneficiary of a social security plan. Exclusion Criteria: * pregnant or breast-feeding women Patients under legal protection measures (guardianship, curatorship or protection of the court) * Patients who have undergone knee surgery (total or partial prosthesis, tibial transposition surgery, arthrodesis) * Patients with inflammatory rheumatism * Patients with neurological sequelae * Contraindications to physical activity for medical reasons * Patients with difficulties in understanding the French language * Refusal to participate * Patients who have already participated in the ARTH-e 2 study or who are already included in a research protocol that could influence the current protocol