Joint (S) for articular braces comprising: - a main body having a first and second end (A, B) opposite to each other with respect to an axis of symmetry (C) of said main body ; - a first movable rod hinged to said first end (A) of the main body ; - a second movable rod hinged to said second end (B) of the main body , said rods being engaged with each other to define a relative movement of mutual pivoting towards or pivoting away of said first and said second movable rod ; - at least one limiting element insertable between said first movable rod and said second movable rod to limit the relative movement of mutual pivoting towards and/or pivoting away of said rods ; said limiting element defining a predefined limit pivoting away position and/or a predefined limit pivoting towards position between said first and said second movable rod ; - at least one engagement element housable in a wall of said main body and reversibly engageable in a respective seat of said limiting element so as to maintain said limiting element in position during the relative movement of mutual pivoting towards or pivoting away of said movable rods , said engagement element comprising a movable body inside a respective housing obtained in the wall of the main body between a constraint position in which it at least partially extends inside the seat of the limiting element , and a release position in which it is retracted inside the housing to allow the insertion or extraction of the limiting element ; said joint (S) being characterized in that said movable body has a substantially spherical conformation and is made of magnetic material, said movable body in the respective constraint position being attracted by magnetic effect inside the seat of the limiting element . - a main body having a first and second end (A, B) opposite to each other with respect to an axis of symmetry (C) of said main body ; - a first movable rod hinged to said first end (A) of the main body ; - a second movable rod hinged to said second end (B) of the main body , said rods being engaged with each other to define a relative movement of mutual pivoting towards or pivoting away of said first and said second movable rod ; - at least one limiting element insertable between said first movable rod and said second movable rod to limit the relative movement of mutual pivoting towards and/or pivoting away of said rods ; said limiting element defining a predefined limit pivoting away position and/or a predefined limit pivoting towards position between said first and said second movable rod ; - at least one engagement element housable in a wall of said main body and reversibly engageable in a respective seat of said limiting element so as to maintain said limiting element in position during the relative movement of mutual pivoting towards or pivoting away of said movable rods , said engagement element comprising a movable body inside a respective housing obtained in the wall of the main body between a constraint position in which it at least partially extends inside the seat of the limiting element , and a release position in which it is retracted inside the housing to allow the insertion or extraction of the limiting element ; <EOS>