The invention relates to an intramedullary nail (1), especially for the tibia, which comprises a proximal end part (2), a distal end part (3) adapted to be introduced into the medullary space and a center axis (6). Said intramedullary nail has A) an overall length L ranging from 200 to 500 mm B) a first curved section (4) having a length G1 = L- and a radius of curvature R1 and C)a second curved section (13) having a length G2 = G1, and a radius of curvature R2 ≤ R1 which is arranged between the proximal end part (2) and the first curved section (4) and D) the tangents in the two end points of a center section comprising the two curved sections (4 13) form a total angle gamma between 9° and 12°
