Inclusion Criteria:  Low energy hip fracture Surgery within 72 hours >50 years old norwegian Women age 50-60 must be postmenopausal or not pregnant Acceptable kidney function (estimated GFR >=35) and calcium levels Fit to complete the follow-up judged by the recruiting physician Signed informed consent by the patient or the next of kin  Exclusion Criteria:  Metal in the opposite hip Anti-osteoporosis treatment with bisphosphonates, denosumab, teriparatide, abaloparatide or romosozumab within the last 10 years Glucocorticoid therapy Too sick to receive treatment with zoledronate judged by the recruiting or treating physician Any other contraindication listed on the SmPC of the IMP(s) including pregnancy Participating in another trial that might affect the current study