Inclusion Criteria:Age  Age ≥ 65 years Cognitively intact primary admission for hip fracture surgery  Exclusion Criteria:  Cognitive impairment Less than moderate level of activities of daily living History of neurosurgery/significant head trauma Acutely unwell/moribund Presence of neurological diseases including overt stroke, dementia, multiple sclerosis, Parkinson's disease, intracranial tumours and other significant neurologic disorders. Postural or movement disorders likely to impede MRI scan Contraindications to MRI Complex fractures/multiple injuries