Surgeon vs. semi-automated software measured assessment of glenoid retroversion

Preoperative anatomic measurements in total shoulder arthroplasty (TSA) influence a surgeon’s decision-making process in deciding treatment options for a given patient. Glenoid retroversion is one of the most significant measurements and can be highly subject to intra- and inter-observer variability in measurement technique. This study compares surgeon measured retroversion values to semi-automated software measured retroversion values on the same 1862 computed tomography scans, showing consistent measurements with an average absolute mean error between the two techniques of 3.1 ± 3.6°