Fig. 2
a Healthy subscapularis muscle - measuring of the vertical diameter (VD): SSC: subscapularis muscle; asterisk/VD: vertical diameter; arrow/CSA: cross sectional area; black arrow: ventral tip of the scapular “Y”. b Healthy subscapularis muscle - determining the center of the vertical diameter; SSC: subscapularis muscle; VD: vertical diameter; arrow/CPVD: center point of the vertical diameter; CSA: cross sectional area; black arrow: ventral tip of the scapular “Y”