**5. Conclusions**

The current study demonstrates that using a data-driven modeling approach, the rate of both primary and revision shoulder arthroplasty procedures is projected to rapidly increase during the next 20 years, with the rate of fracture-related rTSA, performed in elderly patients, showing the greatest impact of all procedures. In light of limited resources and healthcare budgets, this emphasizes the need for adequate prevention programs on the one side, but also for qualified surgeons to meet the demand and for future research to improve the reliability and survivorship of shoulder arthroplasties on the other side.

**Author Contributions:** Conceptualization, A.K.; Data curation, A.K. and Y.G.; Formal analysis, A.K. and E.H.; Investigation, A.K. and Y.G.; Methodology, A.K. and E.H.; Project administration, R.H. and Y.G.; Software, E.H.; Supervision, S.F., R.H. and Y.G.; Writing—original draft, A.K.; Writing—review & editing, A.K., S.F. and R.H. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Acknowledgments:** We thank Kristina Klug, Goethe-Universität Frankfurt, Frankfurt am Main, Institut für Psychologie, for supporting the authors with the statistical analysis.

**Conflicts of Interest:** None of the authors, their immediate families, and any research foundation with which they are affiliated received any financial payments or other benefits from any commercial entity related to the subject of this article.
