Abstract: A device (1) for aligning a guide wire with a femur, comprising: an indication means (2) comprising at least two arms (3), each having a section (4) that is part-circular; an alignment means (6) for locating a portion of the bone for insertion of the guide wire, in use; and a body (18) connected to the indication means (2) and the alignment means (6), wherein the sections of the at least two arms (3) of the indication means (2) can be moved from an open to a closed position, and wherein in the open position the sections of the arms (3) can pass over the femoral head, and wherein in the closed position the sections of the arms (3) form a ring that has dimensions corresponding to a femoral implant component internal diameter. A system and method of aligning a guide wire with a femur.