As your backbone lengthens, the tether slows progress to the curved facet with the spine to offer one other side of your spine to catch up. Sooner or later, the backbone grows straighter. The screws and threads stay in your body completely.书籍：《妙佑医疗国际家庭健康手册》 简报：妙佑医疗国际卫生来信 — 数字版 显�