| 摘要 |
The insert (1) is designed for connecting a bone screw to a bone plate having at least one plate hole with a circumferential projection restricting the profile of the plate hole. The insert (1) comprises an upper section (2), a lower section (3), a central axis (4) and a central hole (10) through said upper and lower sections (2, 3), said upper section (2) having an upwardly facing surface (5) for engaging a bone screw head, and a downward facing locking surface (6) for contacting the surface of the plate hole, and said lower section (3) having retaining means (20) for interlocking with the projection of the bone plate hole.
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