Abstract
<jats:p>Alzheimer's disease, a major global health challenge, requires complex and integrated management. While the principle of a multidisciplinary approach is widely agreed upon, its translation into operational protocols varies considerably from one country to another, reflecting the diversity of healthcare systems, available resources, and cultural contexts.This study aims to analyze and compare the official multidisciplinary care protocols of nine countries with contrasting socio-economic and health profiles. It seeks to understand how these protocols are anchored in their respective healthcare systems and to identify the organizational archetypes that emerge from them. A systematic qualitative analysis of official documents was conducted. The corpus includes the national protocols of India, Turkey, Belgium, South Africa, Zambia, Rwanda, Canada, Cuba, and France, published or updated between 2014 and 2024. A thematic analysis grid, structured around structural, organizational, and contextual axes, enabled an in-depth comparison of implementation logics. The analysis reveals a normative convergence on the fundamental principles of multidisciplinary care, but a marked divergence in their operational application. Eight distinct organizational archetypes were identified: "Adaptive Community-Family" (India, Zambia), "Hybrid Hospital-Specialist" (Turkey), "Standardized and Professionalized" (Belgium), "Centralized Specialized Expertise" (France), "Collaborative and Technology-Driven Patient-Centered" (Canada), "Public-Centralized Community-Based" (Cuba), "Dual Integrated" (South Africa), and "Integrated Community-Based" (Rwanda). Each archetype is a systemic reflection of the national healthcare ecosystem. There is no universally optimal model for multidisciplinary care. The effectiveness and equity of protocols depend essentially on their contextual embedding in local structural, economic, and cultural realities. For decision-makers, a promising path lies in the creative hybridization of best practices, allowing for the adaptation of international principles to the specificities of each healthcare system. This research proposes an analytical framework to guide such a process of contextual adaptation.</jats:p>