A pedicle screw assembly , comprising: a pedicle screw , comprising a screw body , the screw body being elongated and defining a proximal portion and a distal portion , an axial channel defined along a longitudinal axis of the screw body, the axial channel in communication with a proximal opening defined along the proximal portion of the screw body, a first lateral channel formed along the distal portion of the screw body and in communication with the axial channel, a second lateral channel in communication with the axial channel and defined opposite the first lateral channel, a first lateral opening in communication with the first lateral channel; and a second lateral opening in communication with the second lateral channel; and an anchor , comprising an anchor body defining an anchor proximal portion and an anchor distal portion, and a first lateral extension defined along the anchor distal portion, wherein the axial channel is configured to receive the anchor body and the first lateral channel is configured to receive the first lateral extension of the anchor, and wherein an apex is defined between the first and second lateral channels, characterized in that the first lateral extension comprises a pointed end configured to penetrate bone tissue and to drive the first lateral extension within bone tissue associated with a pedicle vertebra. a pedicle screw , comprising a screw body , the screw body being elongated and defining a proximal portion and a distal portion , an axial channel defined along a longitudinal axis of the screw body, the axial channel in communication with a proximal opening defined along the proximal portion of the screw body, a first lateral channel formed along the distal portion of the screw body and in communication with the axial channel, a second lateral channel in communication with the axial channel and defined opposite the first lateral channel, a first lateral opening in communication with the first lateral channel; and a second lateral opening in communication with the second lateral channel; and a screw body , the screw body being elongated and defining a proximal portion and a distal portion , an axial channel defined along a longitudinal axis of the screw body, the axial channel in communication with a proximal opening defined along the proximal portion of the screw body, a first lateral channel formed along the distal portion of the screw body and in communication with the axial channel, a second lateral channel in communication with the axial channel and defined opposite the first lateral channel, a first lateral opening in communication with the first lateral channel; and a second lateral opening in communication with the second lateral channel; and an anchor , comprising an anchor body defining an anchor proximal portion and an anchor distal portion, and a first lateral extension defined along the anchor distal portion, an anchor body defining an anchor proximal portion and an anchor distal portion, and a first lateral extension defined along the anchor distal portion, wherein the axial channel is configured to receive the anchor body and the first lateral channel is configured to receive the first lateral extension of the anchor, and wherein an apex is defined between the first and second lateral channels, characterized in that the first lateral extension comprises a pointed end configured to penetrate bone tissue and to drive the first lateral extension within bone tissue associated with a pedicle vertebra. <EOS>