The present invention concerns a brace (1) for articulation comprising a first rod (3), a second rod (4), having a through hole at one end, and a joint (2) for connecting said first rod (3) and said second rod (4), characterized in that said joint (2) comprises a pair of circular toothed rings (21, 22), provided with a central hole and arranged overlapping, each circular ring (21, 22) is fixed to one end of said first rod (3), which is interposed between them, said second rod (4) being interposed between said circular rings (21, 22), a fixing central pivot, inserted in said central holes of said circular rings (21, 22) and into said through hole of said second rod (4), and a first and a second blocking member (23, 24) each provided with a respective pin (232, 242), adapted to be inserted in two overlapping throats of the indentation of said circular rings (21, 22), so as to limit the movement of said second rod (4).
