Fig. 2

Surface meshes of the humerus and acromion process with heat maps of the distance between the bone surfaces (darker = narrower SAS width; lighter = wider SAS width). The arrows represent the normal projection from the acromion to the closest humeral point (MRI_Hum10; medial-most arrow (green)) and the closest distance between the lateral acromion to the humerus (MRI_Lat; lateral-most arrow (blue))