The invention relates to an arthrodesis plate (2) for reinforcing joints, in particular finger joints, comprising a proximal (4) and a distal (6) anchorage region which are mechanically rigidly connected to one another, characterised in that at least one outer contour (10, 12) of one of the two anchorage regions has a cross-section which is undulated e.g. roof-shaped or provided with alternating elevations and depressions using a coating, and/or has a transversal-sagittal cross-section.