(For example, the patient with a curvature of 153 degrees had 28 metal screws inserted.) Then thin metal rods are used to link the screws and fix them tightly, after which a cantilever is used to gently align each out-of-place vertebra. Finally, the rod on the other side is locked down, thus providing two stable metal tracks, creating a pillar of support for the newly straightened spine.
以側彎 153 度的病患為例，一共打上 28 根鋼釘，當成基樁牢固的施力點，再以細長鋼條將鋼釘串連、緊緊鎖住，接著利用槓桿慢慢地將一節節走位的脊椎扳正，最後再把另一邊的鋼條鎖起來，形成兩條穩固的鐵軌，成為支撐扳正後脊椎的樑柱。