Intra-venous Zoledronic Acid Once Yearly

Inclusion Criteria: * Patient is an ambulatory female 45 years of age or older * Postmenopausal women with diagnosis of osteoporosis * Prescription of zoledronic acid or any OBP as per the current Canadian monograph * Must provide informed consent Exclusion Criteria: * Any prior use of iv bisphosphonates within the last 2 years * Known secondary osteoporosis of any aetiology (hypogonadism in premenopausal women or premature menopause, malabsorption, chronic liver disease, inflammatory bowel disease) * Metabolic bone diseases such as primary or secondary hyperparathyroidism, hypoparathyroidism, Paget's disease of bone, Fibrous dysplasia.. * Non-corrected hypocalcaemia at the time of zoledronic acid infusion * Creatinine clearance \< or = 30 ml/min * Unwillingness or inability to comply with the study requirements * Concurrent participation in a clinical trial of an investigational drug, or within the last 30 days Other protocol-defined inclusion/exclusion criteria may apply.