A bone anchor for use in attaching soft tissue to a bone is provided. The bone anchor comprises an anchor body extending between a proximal end and a distal end. The anchor body has an axial bore (14), a proximal threaded section (38) beginning at and extending distally from said proximal end, and a distal threaded section (40). The proximal threaded section has a first flute (39a) and a second flute (39b).