Abstract: The invention relates to a bone anchor element for inserting into a bone and/or fixing tissue to the bone, wherein the bone anchor element has in a longitudinal direction a proximal end, a proximal section, a distal section and a distal end, and the proximal section has on the outside a contoured indentation to prevent the bone anchor element inserted into the bone from being pulled out and on the inside a continuous hollow space in the longitudinal direction having a proximal opening and a distal opening, and the distal section is formed in a flattened, plate-shaped manner having a plate plane, wherein the bone anchor element has at least one transverse through-hole for receiving a suture material, and the distal section has in the longitudinal direction to the distal end a first transverse through-hole through the plate plane, wherein the first transverse through-hole is connected to the continuous hollow space of the proximal section via the distal opening, and subsequently has a second transverse through-