An osteosynthesis plate according to the invention has at least two legs, which are spaced apart and interconnected by at least one bridge element. The legs each have a certain length and extend in the longitudinal direction from an epiphyseal to a diaphyseal end of the osteosynthesis plate. Moreover, each leg has at least one opening for holding an anchoring element. The size and shape of the bridge element and the legs are configured such that the legs may be applied on both sides of a bone in the region of a joint, preferably on the olecranon.