A bone anchor adapted to secure soft tissue to bone. The anchor includes a first body section and a second body section proximal to the first body section. The first section has a non-circular cross section such that once the implant is inserted into a shaped bone tunnel it may be secured in the tunnel by rotation from its initial insertion position to a second position. The dissimilarity of the non-circular cross section of the proximal end of the first section prevents removal of the bone anchor from the bone tunnel. Additionally, a suture may be threaded through a hole in the second section. Once the anchor is secured in place with an attached suture, the free ends of the suture, the free ends of the suture may be threaded through soft tissue and tied down to secure the soft tissue to bone.
