| 摘要 |
<p>A bone screw (102) comprising a head (104) with a socket (124) for receiving a screw driving device and a shaft (106) extending from the head. The shaft (106) generally includes respective alternating first and second hellical threads (112, 114) running substantially parallel with each other along the shaft (106) (i.e., not intersecting). In addition, the second series of hellical threads (114) advantageous exhibit a diameter substantially different than the diameter of the first series of hellical threads (112). In this manner, the bone screw configuration exhibits a high/low thread design.</p> |
