Do Preoperative and Postoperative Glenoid Retroversion Influence Outcomes After Reverse Total Shoulder Arthroplasty?

Abstract

Background: There are limited data on the effect of glenoid retroversion in clinical outcomes following reverse total shoulder arthroplasty (RTSA). The purpose of this study was to evaluate if surgical correction of retroversion affects outcomes following RTSA. Method(s): An institutional database was utilized to identify 177 patients (mean age: 68.2 +/- 10.1 years) with minimum 2-year follow-up after primary RTSA. Glenoid version was measured on preoperative and postoperative radiographs. American Shoulder and Elbow Surgeons (ASES) scores and range of motion were collected before and after RTSA. Change in retroversion was determined by comparing preoperative and postoperative glenoid retroversion on radiographs using paired Wilcoxon signed-rank test. Spearman's rank correlation was used to investigate relationships between ASES scores and glenoid retroversion. Result(s): The mean postoperative ASES composite score (75.5 +/- 22.7) was significantly higher than preoperative (36.8 +/- 19.2; P