The elbow measurement sites. (A and B) Schematic diagrams of the pasting sites of the resistance strain gauges. The distance between points C and P represents the height of the coronoid process. (C and D) The front and dorsal views of elbow specimens and the connection positions of resistance strain gauges, respectively. 1 = the ulna coronoid process tip (located at the ulna coronoid height 1/3, near the tip), 2 = the middle of the coronoid process (the 1/2 height site), 3 = base part of the coronoid process (the 2/3 site of the height, near the base), 4 = the back of ulnar notch, 5 = the olecranon tip, 6 = the anterolateral margin of the radial head.