A spinal implant comprising: a bone anchor having a head portion and a shaft extending along a longitudinal axis of the bone anchor configured to engage a bone; a head plate coupled to the bone anchor, the head plate including: a first elongated extension element provided on a first side of the head plate, wherein the first elongated extension element is flexible; a second elongated extension element provided on a second side across from the first side of the head plate; a first opening provided at the first side of the head plate; and a second opening provided at the second side of the head plate; a head cap coupled to the head plate, the first elongated extension element and the second elongated extension element, the head cap comprising a seat portion which is provided between the first elongated extension element and the second elongated extension element, a first opening and a second opening, the first and second openings provided at respective sides of the head cap; an anchor locking cap provided around the first and second elongated extension elements, the anchor locking cap being movable along at least one of the first elongated extension element and the second elongated extension element; and a spinal fixation element positioned on the seat portion of the head cap; wherein the anchor locking cap fits over the spinal fixation element so that the spinal fixation element is placed between the seat portion of the head cap and the anchor locking cap; wherein the anchor locking cap reduces the spinal fixation element toward the head cap when the anchor locking cap is moved along the at least one of the first elongated extension element and the second elongated extension element; wherein the first elongated extension element passes through the first opening of the head plate and the first opening of the head cap, the first opening of the head plate being aligned with the first opening of the head cap; and wherein the second elongated extension element passes through the second opening of the head plate and the second opening of the head cap, the second opening of the head plate being aligned with the second opening of the head cap. a bone anchor having a head portion and a shaft extending along a longitudinal axis of the bone anchor configured to engage a bone; a head plate coupled to the bone anchor, the head plate including: a first elongated extension element provided on a first side of the head plate, wherein the first elongated extension element is flexible; a second elongated extension element provided on a second side across from the first side of the head plate; a first opening provided at the first side of the head plate; and a second opening provided at the second side of the head plate; a first elongated extension element provided on a first side of the head plate, wherein the first elongated extension element is flexible; a second elongated extension element provided on a second side across from the first side of the head plate; a first opening provided at the first side of the head plate; and a second opening provided at the second side of the head plate; a head cap coupled to the head plate, the first elongated extension element and the second elongated extension element, the head cap comprising a seat portion which is provided between the first elongated extension element and the second elongated extension element, a first opening and a second opening, the first and second openings provided at respective sides of the head cap; an anchor locking cap provided around the first and second elongated extension elements, the anchor locking cap being movable along at least one of the first elongated extension element and the second elongated extension element; and a spinal fixation element positioned on the seat portion of the head cap; wherein the anchor locking cap fits over the spinal fixation element so that the spinal fixation element is placed between the seat portion of the head cap and the anchor locking cap; wherein the anchor locking cap reduces the spinal fixation element toward the head cap when the anchor locking cap is moved along the at least one of the first elongated extension element and the second elongated extension element; wherein the first elongated extension element passes through the first opening of the head plate and the first opening of the head cap, the first opening of the head plate being aligned with the first opening of the head cap; and wherein the second elongated extension element passes through the second opening of the head plate and the second opening of the head cap, the second opening of the head plate being aligned with the second opening of the head cap.