Methods and apparatus described herein provide for a knotless suture anchor that captures and secures a suture by pinching on an inserted suture with a flexible element disposed within the knotless suture anchors body. The knotless suture anchor has an integrated flexible element that is formed as a plastic part within the knotless suture anchor's body. The free end of the flexible element terminates near a suture eyelet and can be compressed by a driver rod that is inserted into the knotless suture anchor to allow for insertion of a suture. With the flexible element compressed by the driver rod, the suture can be passed through the eyelet(s). When the driver rod is withdrawn, the flexible element expands thereby pinching the suture against the eyelet(s). If the driver rod is reinserted, the flexible element is recompressed and the suture can thereby be released or adjusted.