| 摘要 |
The bone screw has a head (1), a shank (2), a central longitudinal axis (3), a screw tip (4), a jacket surface (5), an external thread (6), and a total length (L), with a bore (7) being provided which is coaxial with the longitudinal axis (3) and open towards the head (1) and which is connected to the jacket surface (5) via at least one channel (8) extending transversely to the longitudinal axis (3) and opens towards the outside in the form of at least one perforation (9) through the jacket surface (5). The bore (7) is closed towards the screw tip (4). The bone screw has the advantage that bone cement can be introduced into the surrounding bone in such a way that an artificial, coaxial bed of cement forms for the thread of the bone screw, which bed of cement, however, adjoins the screw only along the sides, with the result that the screw can be screwed further forwards in the axial direction even after the cement has hardened.
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