| 摘要 |
<p>A bone fracture fixation system (100) includes a substantially rigid plate (102) defining a first hole (134) having a head portion and a shaft portion, with the head portion having a second thread with a second depth substantially greater than said first depth, and a second fastener sized for use within the second hole. In addition, a bone fracture fixation system includes a rigid plate (102) defining at least one cylindrical first hole having at least two discrete helical threads each with a entry lead offset by a predetermined angular displacement, a fastener (104) having a head portion with a thread sized for engagement within the first hole and a shaft portion, wherein when the first fastener is engaged in the first hole, the thread of the head engages with only one of the discrete helical threads.</p> |
