Design science research (DSR) is an established approach to create innovative artifacts while considering relevance and rigor. Design principles (DPs) are the most common knowledge contribution. However, DPs are often not reused in the research and practice community. In this methodology paper, we propose an approach to conduct meta-studies for design knowledge to tackle the issue of low DP reusability. We developed a process model for meta-studies based on DSR-specific terms, evaluated it in an expert workshop with DSR scholars, and demonstrated its application to the example of virtual reality literature. Our meta-study model contributes to the research discussion on the reusability of DPs and is a new approach to gain more transparency about existing DPs in research and practice, enabling the community to better guide future research.