Noncircular broach and methods of use

A method of anchoring a suture to a first bone portion, the suture having opposing first and second ends, the method using:

• a first fixation anchor having a sidewall that forms an internal passage having a proximal opening;
• and
• a punch having a broach shaft including a cylindrical portion with a boss projecting radially from the cylindrical portion, the method comprising:
• pressing the broach shaft into the first bone portion to form a circular bone tunnel having a relief groove in communication with the circular bone tunnel;
• threading the first end of the suture through the first fixation anchor from the proximal opening, down the internal passage, and out through the sidewall of the first fixation anchor;
• and
• pressing the first fixation anchor into the circular bone tunnel such that the first end of the suture passes out of the first bone portion through the relief groove adjacent the sidewall of the first fixation anchor.

A knotless construct for bone or tissue reinforcement, the knotless construct comprising a returning fixation located at a first bone portion, the returning fixation including:

• a noncircular bore formed within the first bone portion, the noncircular bore comprising a bone tunnel having a relief groove extending radially from the bone tunnel;
• a first fixation anchor press fit within the bone tunnel, the first fixation anchor having a sidewall forming an internal passage with a proximal opening;
• and
• a suture having first and second opposing ends, the first end threaded through the first fixation anchor from the proximal opening, distally down the internal passage, through the sidewall, and proximally out of the first bone portion through the relief groove adjacent the sidewall of the first fixation anchor.