Abstract: A device (200) for actuating an intramedullary nail (1) is proposed, which extends in the axial longitudinal direction (L) and comprises a proximal end (202) and a distal end (204), and comprises an actuating shaft (300, 600) which is associated with an actuating element (400, 700), and which comprises at its distal end (304, 604) an engagement section (306, 606) for engaging in, and rotating or retaining, a counterpart complementary thereto, wherein an adapter piece (500, 800) is arranged between the distal end (304, 604) of the actuating shaft (300, 600) and the distal end (204) of the device (200), which adapter piece (500, 800) is connected in a rotatably fixed manner to the engagement section (306, 606) of the actuating shaft (300, 600) at the distal end (304, 604) of the actuating shaft (300, 600), and which comprises, at the distal end (204) of the device (200), an engagement section (506, 806), which is complementary to an engagement section (32, 1032) of the anchor element (24, 1024) of an oppositely

Abstract: In an embodiment an intramedullary nail includes a sheath element extending in a longitudinal direction and having a proximal end, a distal end, and a substantially cylindrical interior, wherein an external contour of the sheath element, viewed perpendicularly to the longitudinal direction, includes an elongate spring element, which is wound in a helical shape starting from the proximal end and with respect to the longitudinal direction and wherein an extension of the external contour of the sheath element is reducible by tensioning the elongate spring element in a winding direction and is increasable by detensioning the elongate spring element counter to the winding direction, and a substantially rod-shaped nail core insertable into the interior through the proximal end of the sheath element, wherein the sheath element and the rod-shaped nail core are two separate parts.