a suture anchor is disclosed which has an elongated body having a distal end , a proximal end and an exterior surface . an axially oriented bore extends into the body from the proximal end and a proximal portion of the bore has a plurality of abutment surfaces for engaging a tool . the bore includes one or more axially oriented suture passages leading to a suture attachment within the bore . a length of suture extends into the at least one suture passage from the body proximal end and extends to the suture attachment . a screw thread spirals about a portion of the exterior surface of the body adjacent the at least one suture passage . between the bore and the exterior surface of the body the body has a wall thickness and wherein the suture passage comprises the area where the wall thickness goes to zero .