An anatomically customized plantar bone plate and system for an angularly stable fixation for the arthrodesis of the tarsometatarsal I joint. The bone plate has a distal plate portion which extends in the longitudinal direction and in which a distal bore is formed for receiving a bone screw at a stable angle, a proximal plate portion which extends transverse to the longitudinal direction, and a central plate portion which extends between the distal and the proximal plate portions and which is made with a curved plate portion with at least one bending zone for the purpose of anatomical customization. A plantar bore for receiving a bone screw to be fixed to the sole of the foot at a stable angle and a bore that is medially inclined for receiving a bone screw to be fixed in a medially inclined manner at a stable angle are arranged in the proximal plate portion adjacently to each other transverse to the longitudinal direction.