Sagittal view of a glenoid with an acute osseous bankart lesion. The outer fitting circle of the glenoid is added. Additionally, multiple rectangles are illustrated, representing the subareas areas of the glenoid size and bony Bankart fracture size. Each rectangle is defined by the width of both, the glenoid and the bankart fragment, multiplied by the slice thickness. The sum of theses rectangles defines the fracture size and the glenoid size.