A surgical instrumenthaving an anchor and a plug is capableof anchoring a suture. The suture anchorhas an anchor body having a topsurface, a bottom surface distal to thetop surface, a transverse bore and awell, the well having an outer surface,an inner surface, and an inner bottomsurface. The plug has a post, a head,and a bottom face. The anchor bodyand the anchor plus form a suture anchor.The suture anchor may be usedduring surgical procedures and can beused in the re-tensioning of a suture.