| 摘要 |
A surgical screw for anchoring a flexible member to a bone. The screw may include a primary thread having a continuous helical ridge that curves around the shaft of the screw. A set of secondary threads may be disposed on, and follow, the continuous helical ridge around the screw. The set of secondary threads may have the same periodicity as the primary thread. The primary thread may comprise both a sharp portion and a blunt portion to prevent damage to the flexible member.. |
