Fig. 5. (A) Schematic drawing of method 4. (B) The angle between the axis through the distal humeral head central axis and the elbow transepicondylar axis (asterisk) +2.4° is shown. The distal humeral head central axis is the axis perpendicular to the boundaries of the articular surface determined by using the limits of the subchondral bone on 2 slices (6 mm) below the largest circle of the humeral head on axial slices.