Provided is an adjustable implant for fixing a femur, the adjustable implant allowing a wire wound around a fractured femur to be accurately placed at a desired location even when the desired location is changed depending on a patient. The adjustable implant includes: a body (100) provided with first locking holes (110) vertically penetrating therethrough at predetermined intervals; a head (200) extending from an upper end of the body (100), and being bent to be in a hook shape for being hooked over a greater trochanter of a femur; and a detachable wire locking part (300) detachably mounted to the body (100) or to the head (200), and supporting a wire (400), wherein the detachable wire locking part (300) includes: base parts (310); and a wire locking member (320) having a coupling member (321) so as to be detachably coupled to each of the base parts (310).