In external fixation of the humerus according to the Ilizarov method wires of diameter 1.5 mm are used. The basic wires used in CEF are 1.8–2 mm in diameter, and the wires used for reduction are 1.5 mm in diameter. Half-pins of diameter 5 mm are inserted into the diaphyseal part of the humerus and 4-mm half-pins or console wires are inserted into the epicondyle. For patients with bone diameters of 28–30 mm it is permissible to use 6-mm threaded half-pins throughout the first three levels (0, I, II). The set for fixation must also include 2-mmconsolewires with a stop at the positions allowing various lengths of the wire to be inserted into the bone (5, 10, 15 or 20 mm) (Figs. 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 10.10, 10.11, 10.12, 10.13, 10.14, 10.15, 10.16, 10.17, and 10.18).