External fixing device for a fracture treatment (1, 100, 200) includes a first member (2, 102, 202), the second member (3, 103, 203), said first member (2, 102, 202) and the second the central body (4, 104, 204), said first member (2, 102, 202) to the central body (4, 104, 204) with articulated connecting disposed between the second member (3, 103, 203) for the first ball joint (5, 105, 205), the second member (3, 103, 203) to the central body (4, 104, 204) and a second ball joint (6, 106 for articulation, 206), said first ball joint (5, 105, 205) and said second ball joints (6, 106, 206), locking means (11, 11 associated with each of the operatively '; 111, 111'; 211, 211 ') for containing, and wherein the locking means comprises a central body (4, 104, 204) the first member (2, 102, 202 and the second member allowing motion of 3, 103, 203) / prevention for to a suitable and, for the external fixation device (1, 100, 200) connected to each of the bone part of the fracture to be treated wherein the first member (2, 10 2, 202) comprises a first clamp (7, 107, 207), and the second member (3, 103, 203) of claim 2 including a clamp (8, 108, 208), said central body (4 , 104, 204) comprises a third clamp (9, 109, 209).