Fig. 1
From: Does the coronoid fracture in terrible triad injury always need to be fixed?
Preoperative evaluation of height loss of the coronoid process using computed tomography (CT). Height loss of the coronoid process is evaluated using a preoperative CT study. After the midline portion at the coronal plane is identified, it is used as a reference to confirm the mid-sagittal plane of the coronoid process. In the mid-sagittal plane, the height loss of the coronoid process is evaluated by measuring the ratio of the height of the fractured fragment (b) to the total expected coronoid process height (a + b)