*Review* **Innovations in Shoulder Arthroplasty**

**Nels Leafblad, Elise Asghar and Robert Z. Tashjian \***

> Department of Orthopaedics, School of Medicine, University of Utah, 590 Wakara Way, Salt Lake City, UT 84108, USA; nels.leafblad@hsc.utah.edu (N.L.); elise.asghar@hsc.utah.edu (E.A.) **\*** Correspondence: robert.tashjian@hsc.utah.edu; Tel.: +1-801-587-5450; Fax: +1-801-587-5411

**Abstract:** Innovations currently available with anatomic total shoulder arthroplasty include shorter stem designs and augmented/inset/inlay glenoid components. Regarding reverse shoulder arthroplasty (RSA), metal augmentation, including custom augments, on both the glenoid and humeral side have expanded indications in cases of bone loss. In the setting of revision arthroplasty, humeral options include convertible stems and newer tools to improve humeral implant removal. New strategies for treatment and surgical techniques have been developed for recalcitrant shoulder instability, acromial fractures, and infections after RSA. Finally, computer planning, navigation, PSI, and augmented reality are imaging options now available that have redefined preoperative planning and indications as well intraoperative component placement. This review covers many of the innovations in the realm of shoulder arthroplasty.

**Keywords:** shoulder arthroplasty; stemless; inlay; onlay; augmen<sup>t</sup>
