| 摘要 |
PROBLEM TO BE SOLVED: To facilitate an easy screwing-in of a threaded bone fastener head into a bone plate or any other implant without jamming.SOLUTION: A bone fastener for use in orthopaedic surgery for fixing an implant to bone has a threaded or unthreaded shaft 12 configured to engage bone and a head 14 having a thread on an outer surface to engage the implant. The thread on the head of the fastener has a profile in cross section that includes peaks with a curved shape. |
