| 摘要 |
The present invention provides an improved orthopedic fastener adapted for receipt within a receiving surface associated with an orthopedic material, the fastener comprising a head separated from a tapered end along a threaded shaft, the threaded shaft having at least one helical thread extending therebetween, at least one region of irregularity positioned along the helical thread and presenting an axis of retention, the axis of retention limiting longitudinal movement of the threaded shaft from the receiving surface.
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