The AGE VASC study is a prospective observational cohort study. All patients aged 70 years or older, scheduled for peripheral vascular surgery of the lower limb, mentally competent and have signed informed consent are eligible for the study. Before surgery patients will be screened for frailty using different questionnaires and physical tests. The battery of tests exists of Short Form 36 (SF36), Walking Impairment Questionnaire (WIQ), Multi Nutritional Assessment (MNA), Montreal Cognitive Assessment (MoCA), Nagi's scale for disability, Geriatric Depression Scale -8 (GDS8), three physical tests: five meter walking speed, timed get up and go test and hand grip strength. And a non-invasive measurement of Advanced Glycation Endproducts (AGEs). A blood sample will be taken to determine vitamin status, immune status and iron deficiency. After surgery, electronic patients charts will be studied to score postoperative complications or mortality. Three and twelve months after surgery patients will receive SF-36, WIQ, and World Health Organization Disability Assessment Schedule (WHODAS) 2.0 questionnaires to determine quality of life and functional status.