A system for reducing curvature of a spine is provided, the system comprising a spinal construct having an elongated longitudinal element affixed to and extending between a first fixation element and a second fixation element, the first fixation element having a first end configured to engage at least a portion of a first anchor member, and the second fixation element having a second end configured to engage at least a portion of a second anchor member, the first and second anchor members configured to pierce the spine, wherein the elongated longitudinal element is configured to generate a corrective force sufficient to reduce curvature of the spine. The systems and methods provided allows a surgeon to select a tether, determine its length, and pre-assemble the spinal construct, which then can be coupled onto the head of a bone anchor.