Background: A hip fracture is often a catastrophic event that is a significant threat to an individual's mobility, independence and ability to live in the community. Projections indicate that the incidence of hip fracture will increase nearly four-fold by 2041 in Canada. The course and outcomes of hip fracture patients are often complicated by the presence of dementia and delirium, referred to as cognitive impairment (CI), which limits access to in-patient rehabilitation. In response to this concern, members of our team developed an in-patient rehabilitation model of care for patients with hip fractures, with specific components of the model targeting patients with CI (PCRM-CI). The pre-clinical and phase I testing of the model has been completed, and preliminary evidence exists that patients with and without CI can regain their mobility and function and return to previous living arrangement at discharge from rehabilitation. This proposed 3 year study focuses on phase II, that is, to compare the PCRM-CI with usual rehabilitation care and to gain a better understanding of factors influencing implementation of the model. Decision-making partners for this proposal have identified service gaps within their local health region related to rehabilitation care of patients with hip fractures and are committed to sustaining the model beyond this study. This proposed research addresses the mandate of the current funding opportunity by improving the mobility of cognitively impaired elders, and by enhancing the capacity of research users to apply research evidence in decisions on models of care that can contribute to improved mobility for aging older Canadians.