1. A bone fixation system comprising a bone implant comprising an implant body that defines an upper surface and a surface facing the bone opposite the upper surface and a bone fixation hole that extends through the implant body from the upper surface to the surface facing the bone, this hole for fixing the bone is at least partially formed by a threaded inner wall； a bone fixation element comprising a head and a shaft that extends distally with respect to the head and is configured to be inserted into a fixation site in which the bone fixation element further defines a locking surface, and the head forms a threaded region that is distant from the locking surface in the distal direction, and a threaded region that is threadedly engaged with the threaded inner wall when the bone fixation member is rotated to advance the heads distally into the hole as long as at least part of the threaded inner wall will not be captured between the stop surface and the threaded oblastyu.2. The bone fixation system according to claim 1, wherein the locking surface is aligned with the bone implant in a distal direction. The bone fixation system according to any one of paragraphs. 1 and 2, in which the rotation of the locking element after the threaded region engages in the threaded engagement with the threaded inner wall causes the locking surface to contact the bone implant. 4. The bone fixation system according to claim 3, wherein the subsequent rotation of the bone fixation element after the retaining surface is already1. Система фиксации кости, содержащаякостный имплантат, содержащий корпус имплантата, который определяет верхнюю поверхность и поверхность, обращенную к кости, противоположную верхней поверхности, и отверстие для фиксации кости, которое проходит через корпус имплантата от верхней поверхности к поверхности, обращенной к кости, при этом отверстие для фиксации кости по меньшей мере частично образовано резьбовой внутренней стенкой； иэлемент фиксации кости, содержащий голо
