Table 2 Schneider criteria

Schneider criteria

 Oversized Kirschner wires in terms of length

 Loose figure-of-eight configuration (i.e. the wire cerclage not ‘flush’ to the bone)

 Incorrect reduction (i.e. congruent joint articular surface)

 Perforation of the joint surface

 Non-parallel Kirschner wires (with reference to the other Kirschner wire) on anterior–posterior view

 Kirschner wires extending radially outwards

 Proximal ends of the Kirschner wires not bent 180 degrees back into the cortical bone of the olecranon

 Two intramedullary Kirschner wires

 Single wire knot

 Prominent wire knot(s) (i.e. twisted ends not sufficiently bent back into direct contact with the bone)