Wang AW, et al. - In a prospective case-series study of the first 24 consecutive individuals who underwent a primary reverse total shoulder arthroplasty (RTSA) with navigation done by a single surgeon, researchers assessed the learning curve of a single surgeon performing computer navigation of glenoid implant placement in primary RTSA. The total surgical time was 77.3 minutes and 78.5 minutes in the navigated RTSA cohort and the non-navigated series, respectively. In the navigated cohort, a notable downward trend in the total surgical time was noted, which leveled after eight cases. In the deviation of the glenoid version or inclination from the preoperative plan, no learning curve was noted. The mean deviation of the accomplished version from the planned version and the mean deviation of achieved inclination from the planned inclination was 3° and was 5°, respectively. In summary, findings from this study insinuate that in comparison with standard surgical techniques, intraoperative computer navigation would not need considerably improved operating times. Moreover, with former surgeon training, nearly eight operative cases are needed to attain proficiency in intraoperative computer navigation of the glenoid component.