A set of Screw Bone (20, 65, 70, 100) for fixing to a Bone,That includes: a) a first element of Bone Screw (21； 103) With An elongated Body (22) which includes a First threaded End (24) with a First Screw Thread external (23； 104).In a First direction and a First Advance length and a Second End.The first element of understanding in addition to Bone Screw (21) a characteristic of Internal thread (28； 73) with a Second direction and a Second Advance length located within a TTABIC (26) or a Central Channel (27) provided inside the elongated Body (22)； (b) a second element of Bone Screw (40, 80, 105) comprises at least one Second external Screw ThreadRNA (44, 46； 81； 106) with the second sense of rotation and the second Advance length,Wherein Said Second direction is the opposite of the first direction and / or the first Advance length is different from the second Advance length,And because this second element of Bone Screw (40, 80, 105) is disposed within Said Hole (26),And the second Screw Thread external (44, 46； 81； 106) is coupled with the feature of Internal thread (28； 73),In the second element of Bone Screw (40, 80, 105) can move from a First configuration of the second element in the implantation of Bone Screw (40, 80, 105)You disposed substantially entirely within the Drill Hole (26), or the central Channel (26) and (27),And a Second deployment configuration in which the second element of Bone Screw (40, 80, 105) protrudes from the Hole (26) so that the second element of Bone ScrewHas been made towards this goal since the bone Drill more than in the first Configuration while still partially coupled with the feature of Internal thread.Mevcut buluş dönel momentlere dayanabilen bir kemik vidası tertibatı ile ilgilidir.
