An improved suture anchor has one or more channels formed into the exterior surface of the anchor body. The channels may be used to inject a compound, such as filler material or an adhesive, into the implant site. Preferably, the channels connect to a retainer in the anchor body for a suture to pass through, preventing the suture from being compressed and allowing removal and adjustment of a suture retained by the anchor after the anchor is installed in a bone. The retainer is preferably a slot formed into the distal end of the anchor body. In a method of securing tissue to bone, an insertion tool is used to insert the suture into the anchor and install the anchor into an implant site in the bone. If the suture later fails, the channels may be used to fill the implant site with bone cement for redrilling. Preferably, the suture anchor is made of human cortical bone or a similarly bioabsorbable and osteoconductive material.
