Elastography as Gouty Arthropathy Outcome (EGO)

Inclusion Criteria: 1. Subjects who are at least 18 years of age but younger than or equal to 99 years of age. 2. Subjects with gouty arthritis as determined by the ACR 1977 classification criteria for gouty arthritis. 3. Subjects with one palpable tophus detectable by one of the three clinical parameters described. \- Exclusion Criteria: 1. Subjects who are not eligible for urate lowering treatment or show a hypersensitivity to these drugs or class of compounds. 2. Subjects with significant cardiovascular, neuropsychiatric, hematologic, hepatic, renal or endocrine dysfunction who in the opinion of the principal investigator are unfit for participation in a clinical trial. 3. Subjects for which the clinical and laboratory assessment would provide undue discomfort and / or are contraindicated. \-