Intraoperative Navigation and Preoperative Templating Software are Associated with Increased Glenoid Baseplate Screw Length and Use of Augmented Baseplates in Reverse Total Shoulder Arthroplasty

Background Preoperative templating software and intraoperative navigation have the potential to impact baseplate augmentation utilization and increase screw length for baseplate fixation in rTSA. We aimed to assess their impact on (1) baseplate screw length, (2) number of screws used, and (3) frequency of augmented baseplate use in navigated rTSA. Methods Fifty-one patients who underwent navigated rTSA were compared against 63 controls who underwent conventional rTSA at a single institution. Primary outcomes included screw length, composite screw length, number of screws used, percentage of patients in which two total screws were used, and use of augmented baseplates. Results Navigation resulted in use of significantly longer individual screws (36.7 mm vs. 30 mm, p Conclusion The difference in screw length, number of screws used, and augmented baseplate use demonstrates the evolving role that computer navigation and preoperative templating play in surgical planning and intraoperative technique for rTSA. Level of Evidence Level III; Retrospective Cohort Comparison; Treatment Study