Device for correcting bone fractures using bone anchors, in particular bone screws, and extension devices attachable to the bone anchors, wherein the device comprises a first receptacle and a second receptacle, wherein the first receptacle is designed and arranged to receive a first extension device for a first bone anchor and to form a first force introduction section into the first extension device, and wherein the second receptacle is designed and arranged to receive a second extension device for a second bone anchor and to form a second force introduction section into the second extension device, wherein the device comprises a first actuating device and a second actuating device, wherein the device is designed such that the first extension device has a first upper pivot axis provided and a first lower pivot axis provided at a distance from this and the second extension device has a second upper pivot axis provided and a second, lower pivot axis provided at a distance from this, when the extension devices are received in the provided positions in the receptacles, wherein the first actuating device is designed to move, when actuated, the first extension device and the second extension device to one another in such a way that a distance between the first lower pivot axis and the second lower pivot axis changes, in particular wherein the change in the distance is caused by pivoting the first extension device about the first upper pivot axis and the second extension device about the second upper pivot axis, and wherein the second actuating device is designed to pivot the first extension device about the first lower pivot axis and the second extension device about the second lower pivot axis when actuated, characterized in that the first force introduction section formed by the first receptacle is spaced apart in the direction of the longitudinal extent of the first extension device (12a, 12b) from the first lower pivot axes and that the second force introduction section formed through the second receptacle is spaced in the direction of the longitudinal extension of the second extension device to the second lower pivot axis, when the extension devices are received in the intended positions in the receptacles. wherein the device comprises a first receptacle and a second receptacle, wherein the first receptacle is designed and arranged to receive a first extension device for a first bone anchor and to form a first force introduction section into the first extension device, and wherein the second receptacle is designed and arranged to receive a second extension device for a second bone anchor and to form a second force introduction section into the second extension device, wherein the device comprises a first actuating device and a second actuating device, wherein the device is designed such that the first extension device has a first upper pivot axis provided and a first lower pivot axis provided at a distance from this and the second extension device has a second upper pivot axis provided and a second, lower pivot axis provided at a distance from this, when the extension devices are received in the provided positions in the receptacles, wherein the first actuating device is designed to move, when actuated, the first extension device and the second extension device to one another in such a way that a distance between the first lower pivot axis and the second lower pivot axis changes, in particular wherein the change in the distance is caused by pivoting the first extension device about the first upper pivot axis and the second extension device about the second upper pivot axis, and wherein the second actuating device is designed to pivot the first extension device about the first lower pivot axis and the second extension device about the second lower pivot axis when actuated, characterized in that the first force introduction section formed by the first receptacle is spaced apart in the direction of the longitudinal extent of the first extension device (12a, 12b) from the first lower pivot axes and that the second force introduction section formed through the second receptacle is spaced in the direction of the longitudinal extension of the second extension device to the second lower pivot axis, when the extension devices are received in the intended positions in the receptacles.