| 摘要 |
The bone plate (1) proposed has several conical holes which taper towards the surface (2) in contact with the bone and two screws (4) designed to anchor the plate (1) in place. Each of the screws (4) has a conical head (5), with a patterned curved surface, shaped to fit into the conical holes (3) in the plate, plus a threaded shank (6) designed to anchor the screw in the bone. The patterned curved surface of the screw head is harder than the material of which the plate (1) is made in the vicinity of the holes (3). |
