and in accordance with exemplary embodiments of the present disclosure it is contemplated that the torsion bar 292 may have an asymmetric cross section so as to provide for flexibility of stiffness in two planes in such instances the asymmetric cross sectional torsion bar 292 will affect the system stiffness in lateral bending and axial rotation independently further the torsion bar 292 may be utilized to tune the systems stabilization in all three planes with reference to fig1 a further exemplary dynamic stabilization device 400 is provided wherein the elongate element 250 u2032 defines a travel path that includes at least one curved section in addition to the dynamic spine stabilization device described above other complementary devices are contemplated for example a link device may be provided for joining the left and right stabilizer units to help provide additional stability in axial rotation and lateral bending this link device would be a supplement to the dynamic spine stabilization device and would be applied as needed on an individual patient basis in addition a spinal stability measurement device may be utilized the measurement device would be used to quantify the stability of each spinal level at the time of surgery this device would attach intra operatively to a pair of adjacent spinal components at compromised and uncompromised spinal levels to measure the stability of each level the stability measurements of the adjacent uninjured levels relative to the injured level s can be used to determine the appropriate adjustment of the device additionally the stability measurements of the injured spinal level s can be used to adjust the device by referring to a tabulated database of normal uninjured.