The KINSA® RC 5.5 Suture Anchor is designed to provide secure repair of shoulder injuries stemming from tears to the rotator cuff. A surgeon taps the anchor into the bone surface, and then seats it with a final twist. The surgeon controls the amount of tension applied to the repair by manually tightening the KINSA suture. The KINSA RC anchor is about ½-inch in length and made from a unique, implantable PEEK-OPTIMA® polymer from Invibio®, which closely matches the density of cortical bone. The implants deliver strong repair but do not show up on X-rays or distort MRIs, as metal anchors would.