Systems, apparatuses and methods for securing tissue to bone using a bone anchoringsystem are described. Methods and apparatuses may allow transformation betweenlocked and unlocked states, thereby allowing adjustment of the tension in thesuture. The apparatus and/or methods may allow unidirectional movement of asuture, while preventing slippage or movement of the suture and tissue in theopposite direction. Ends of a suture may be individually tensioned to adjustpositioning of a tissue with respect to a bone.