[Interpretation of EPRD data in the context of EndoCert certification]

External quality assurance in arthroplasties in Germany is largely based on the EndoCert certification system and the German Arthroplasty Registry (EPRD). Both systems provide extensive data; however, their added value emerges only through methodologically sound and contextualized interpretation.

This article aims to outline which EPRD data are relevant in the context of EndoCert certification and how these data can be analyzed and interpreted in a quality-oriented manner. The key EPRD data sources, like annual overview, hospital-specific reports, PROM reports, and the annual report, are systematically categorized, and their informative value is discussed with regard to EndoCert requirements.

Structured use and interpretation of EPRD data enable EndoCert centers to perform a differentiated assessment of outcome quality and support data-driven quality management within the certification process.