| 摘要 |
A thread screw (1) with a distal insertion (11) end and a proximal head-end and a thereaded shank (4) extending in between, wherein the distal insertion (11) end comprises a first distal portion (7) that comprises the outermost distal end of the distal insertion end, which outermost distal end is eccentrically located with respect to the central axis S-S of the shank (4), in which the first distal portion (7) defines a circumferentialy continuous, smooth surface (9), a second distal portion (6), connecting in proximal direction to said first distal portion (7), said second distal portion (6) defining a circumferentialy continuous, cylindrical and smooth surface.
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