Vascular Function, Sarcopenia and Pain in Postmenopausal Osteoporosis

Inclusion Criteria: * Women aged 50 years or older with postmenopausal osteoporosis, whether fractured or not, requiring initiation of treatment with antiosteoporotic drugs (bisphosphonates, raloxifene, teriparatide, denosumab and others to come for this indication, including romosozumab), either orally or by injection, as part of their care and management. * Able to give informed consent to participate in research. * Affiliation to a Social Security system. Exclusion Criteria: * Patient with chronic renal failure, defined as glomerular filtration rate \< 30 mL.min-1 estimated by CKD-EPI. * Patient with a medical and/or surgical history deemed by the investigator or his/her representative to be incompatible with the trial. * Patient under legal protection or deprived of liberty. * Refusal to participate.