Fracture Risk in Living Kidney Donors

This study will be a population-based, matched retrospective cohort study using linked administrative healthcare databases from Ontario, Alberta, and British Columbia to evaluate the long-term risk of fractures among living kidney donors compared with a healthy cohort of nondonors. Living kidney donors who donated between 1992 and 2024 will be included and matched 1:10 to a carefully selected population of nondonors based on key demographic and clinical characteristics. The primary outcome is a composite of incident hip, femoral shaft, humeral, wrist/forearm, and pelvic fractures. Secondary outcomes will examine each fracture site separately. The results will provide evidence to inform clinical guidelines, support informed decision-making for potential donors and recipients, and guide counselling by transplant clinicians.