Prevalence of Appropriate Anatomic Total Shoulder Arthroplasty in a Large Multicenter US Cohort Using a RAND/UCLA Algorithm

The large proportion of "inconclusive" patients suggests a lack of consensus regarding aTSA versus reverse TSA candidacy and may be secondary to factors such as worse glenoid morphology and/or prior rotator cuff repair, which are subjects of current debate in determining appropriateness for reverse TSA versus aTSA. Although no definitive conclusions can be made regarding if this algorithm ultimately improves patient outcomes, this study seeks to only help streamline patient evaluation based on American Shoulder and Elbow Surgeons high-volume surgeons' opinion and highlight the large variation in the indications for aTSA in real-world surgical cases.