Patient Acceptable Symptomatic State FRESH-PEF93-en Franck VIGNAL Patient Acceptable Symptomatic State PASS-ARTHROSE FRESH-PEF93-en 93 FRESH-PEF93 Franck VIGNAL SANOFI (FRANCE) Epidemiology France Portal (PEF) AGENCE NATIONALE DE RECHERCHES SUR LE SIDA ET LES HEPATITES VIRALES (ANRS MIE) null Franck;VIGNAL evaluation of the pain and response to antalgic treatment PASS Minimal Clinically Important Improvement (MCII) Rheumatology Osteoarthritis Behavioral determinants Determine, in patients suffering from arthrosis of the lower limbs, the percentage of patients that find their pain "acceptable" at rest and when movement, after one week of treatment, according to the PASS concept (Patient Acceptable Symptomatic State). null France Individuals Patients population Male Female Middle Aged (45 to 64 years) Aged (65 to 79 years) Aged, 80 and over (80 years and more) Patients must: • be ambulatory, • be aged 50 years or older, • consult for a defined gonarthrosis and/or coxarthrosis according to the clinical or radiological criteria of the American College of Rheumatology, • be symptomatic with pain greater or equal to 3 on a numerical pain scale from 0 to 10, at rest or during movement, in the 24 hours preceding entry in the study, • requiring the taking of an antalgic treatment for a duration of at least one week, • be able and accept to complete a self-evaluation questionnaire, • accepting to participate in the survey. Clinical data Participant-reported health data Socio-demographic data Health care consumption and services Quality of life/health perception One-time cross-sectional study Other Through independent healthcare practitioners Medical-administrative database (patients health insurance/mutual insurance) Disease and death registry [1000-10000[ individuals Self-administered questionnaire Observational Study Observational Study 3329 Completed study To be defined Access on specific project only