{"10":"Forward flexion >60° but ≤85° (thoracolumbar) or >30° but ≤40° (cervical); OR combined ROM >120° but ≤235° (thoracolumbar) or >170° but ≤335° (cervical); OR muscle spasm not resulting in abnormal gait.","20":"Forward flexion >30° but ≤60° (thoracolumbar) or >15° but ≤30° (cervical); OR combined ROM ≤120° (thoracolumbar) or ≤170° (cervical); OR muscle spasm severe enough to produce abnormal gait or spinal contour.","30":"Forward flexion ≤15° (cervical); OR favorable ankylosis of the entire cervical spine.","40":"Unfavorable ankylosis of entire cervical spine; OR forward flexion ≤30° (thoracolumbar); OR favorable ankylosis of entire thoracolumbar spine.","50":"Unfavorable ankylosis of entire thoracolumbar spine.","100":"Unfavorable ankylosis of entire spine."}