Pastor MF, Smith T, Ellwein A, et al. - The present study was conducted to investigate the associations between bony anatomy and anterior dislocation forces. Researchers applied the variations in anterior dislocation force in reverse total shoulder arthroplasty reported in a previous biomechanical study to examine the anatomic factors affecting anterior stability. Three-dimensional computed tomographic scans and radiographs were applied to assess critical shoulder angle, glenocoracoid distance in 2 planes, and glenoid inclination. They further compared anatomic parameters with the anterior dislocation forces. The results of this research reveal that distance between the coracoid tip and glenoid in 2 planes had a significant negative association with the anterior stability of the reverse shoulder arthroplasty with a lateralized glenosphere and 155° humeral inclination. The data imply that only glenoid lateralization is affected by the bony anatomy.