A universal self-locking anatomical plate for posterior of acetabulum and pelvis, comprising a right plate (1), a plurality of screws (2) and a guiding sleeve (3) for guiding drilling of the screws (2),
- wherein
- the right plate has a central axis, a longitudinal section, an edge, and a central portion,
- the longitudinal section along the central axis of the right plate (1) has a smooth arc surface, and
- the right plate (1) vertically comprises a first locking block (a), a second locking block (b), a third locking block (c), a fourth locking block (d) and a fifth locking block (e), which are all in arc;
- the right plate (1) comprises, on sideways, a region-A, a region-B, a region-C and a region-D;
- the first locking block (a) is provided thereon with three first locking holes (a1) for receiving the screws (2), the second locking block (b) is provided thereon with at least two second locking holes (b1), the third locking block (c) is provided thereon with two positioning holes (c2) and twelve third locking holes (c1), the fourth locking block (d) is provided thereon with three fourth locking holes (d1), and the fifth locking block (e) is provided thereon with one fifth locking hole (e1);
- and an angle (α) between each of the first locking holes (a1), the second locking holes (b1), the third locking holes (c1), the fourth locking holes (d1), and the fifth locking hole (e1) and the surface of the right plate (1) is in range of 0°-20°;
- and
- each of the first locking holes (a1), the second locking holes (b1), the third locking holes (c1), the fourth locking holes (d1), and the fifth locking hole (e1) has an internal thread;
- a first connecting bridge (11) and a second connecting bridge (12) are extended outward from the first locking block (a), the first connecting bridge (11) defines a first connecting hole (11a), the second connecting bridge (12) defines a second connecting hole (12a);
- a third connecting bridge (13) and a fourth connecting bridge (14) are extended laterally away from the third locking block (c), the third connecting bridge (13) defines a third connecting hole (13a), the fourth connecting bridge (14) defines a fourth connecting hole (14a), the third connecting bridge and the fourth connecting bridge defining a U-shape;
- the second connecting bridge (12), the third connecting bridge (13) and the fourth connecting bridge (14) each defines a groove (16), and each groove (16) is respectively closer to the central axis of the right plate (1) relative to the first connecting hole (11a), the second connecting hole (12a), the third connecting hole (13a) and the fourth connecting hole (14a);
- and
- two compensation holes (c3) are respectively provided at a joint between the third connecting bridge (13) and a region-c, and a joint between the fourth connecting bridge (14) and the region-c, each compensation hole (c3) is in communication with an adjacent groove (16), each compensation hole has a first diameter that is larger than a width of the groove, and the grooves have a width that is smaller than a diameter of each of compensation holes.