Apparatus bone union

A device suitable bone joint (10) for attaching a first bone piece (50) to a second bone part (50), the device (10) a first component (20) and a second component (30) comprising, wherein the first component (20) comprises a first portion of the elongate shaft comprising a first end (21) and a first upper part (22) opposite the first end (21), the first portion of appropriate stem for insertion from the first end longitudinally on a surface of the first bone piece (50), and the second component (30) comprises a second portion of the elongate shaft comprising a second end (31) and a second upper part (32), the second portion of the elongated shaft suitable for insertion from the second end (31) longitudinally on a surface of the second bone part (50), and a connector extending from the second top (32), wherein the connector is capable of mating with the first comp onente and locked therewith, wherein the first portion of the elongate shaft of the first component (20) includes an opening comprising a cavity (29) comprising a wall (23), a closed distal end (27) and one end open proximal (28) and the connector (40) is elongated and fits within the cavity (29), wherein each of the first portion of the elongate shaft and the second portion of the elongate shaft are cylindrical, conical or a combination thereof, and comprises a spiral thread (24), characterized in that connector (40) comprises a shaped shaft (46/70), wherein the axis formed (46/70) comprises a plurality of notches or grooves (250 ) axially deposed on at least a portion of the shaped shaft (46/70), wherein the first portion of the elongated shaft comprises: a notch (72) at least partially circumscribing the first top (22), with at least one hole (74, 76) passing through the first part superior dent ro cavity (29), and a C-ring or O-ring (80) with protrusions comprising at least one projection (82, 84) projecting inwardly, the C-ring or O-ring (80) with projections configured to fit within the notch (72) in the first upper part (22) such that the at least one projection (82, 84) fits into the at least one hole (74, 76) and protrudes into the cavity (29), and wherein, when the connector (40) is inserted into the cavity (29) in the first portion of the elongated shaft, the at least one projection (82, 84) projecting into the cavity (29 ) meets the connector (40) and retracts out of the cavity (20) until the connector (40) is further inserted into the cavity (29) and the at least one projection (82, 84) is a notch ( 250) or a gap between the two grooves (250) of the connector (40), allowing the projection (82, 84) protrudes into the cavity (29) within a space between the wall (23) and the connector (40) cread or the slot or gap (250) of the connector (50).