The present disclosure concerns a device 10 for securing a ligature to an osseous structure, the device 10 comprising a first part 11, a second part 12, a flexible elongate member for engaging the osseous structure, a closure element 13, and a deformable element 20 between the first and second parts 11,12 for holding open a gap G between them. The flexible elongate member is threaded through an orifice 19 in the first part 11 and the gap G. The closure element 13 is configured for clamping the first and second parts 11,12 against each other, overcoming the resilience of the deformable element 20, so as to frictionally lock the flexible elongate member threaded through the gap G. The present disclosure also concerns a method for using said device 10.