| 摘要 |
The bone screw (10) has a shank (16) with a thread (14) having a pitch of approximately 0.7-1 mm. The bone screw has a tip angle that allows arrangement of the thread flank (20) of a first flight (22) adjacent to a bone screw tip (18), at a distance of approximately 0.2-0.5 mm from the bone screw tip.
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