A lock block anchor provides secure fixation of a tendon, ligament, synthetic material or strand of any sort into a tunnel, slot or socket, in bone for orthopedic uses. The tendon, ligament or synthetic material is attached to the exterior of a roughened surface on the anchor and extends beyond the distal end of the anchor. When the anchor is locked into place following suitable preparation of the bone socket, it compresses to the tendon, ligament or synthetic material against the under surface of adjacent cortical bone. The compression and additional length promote faster, more effective healing.
