Fig. 2From: Study of the variability of scapular inclination and the glenoid version - considerations for preoperative planning: clinical-radiological studyDiagram of glenoid retroversion angle measurement. The scapular axis (Friedman line) is marked in red. The line perpendicular to the scapular axis passing through the centre of the glenoid is marked in green and the line connecting the rims of the glenoid is marked in yellow. The angle of glenoid version is marked in blue Back to article page