| 摘要 |
The invention relates to a compression screw for osteosynthesis, that comprises a threaded head (2), a threaded distal end (4) and a smooth cylindrical body (6) connecting the threaded head and the threaded distal end, said screw being characterised in that the head comprises two juxtaposed parts (2A, 2B), i.e. a first conical part (2A) having a diameter that decreases in the direction of the distal end and a second cylindrical part (2B) having a constant radius R and forming an extension, the head assembly including a screw thread or a succession of screw threads. |
