Objective: To define the criteria for the continuity of care to elderly people submitted to arthroplasty. Method: This is a qualitative study, inserted in the constructivist paradigm, whose methodological option fell on research-action. The participants were the health professionals of an orthopedic service and of the community care teams in the area of the hospital. Results: The different techniques allowed us to identify the difficulties in the safe transition from the hospital to the community. At this level, two categories of criteria for continuity of care emerged: criteria associated with the risk of ineffective management of the therapeutic regimen, and criteria associated with the knowledge and level of competence of the informal caregiver. Final Considerations: An elderly person undergoing arthroplasty (hip or knee) has functional alterations that affect their capacity for self-care and may lead to dependence, our findings allowed the design of an algorithm to facilitate clinical decision making and promote a safe hospital-community transition.