In Brief:
Circumspinal decompression with dekyphosis stabilization was performed in 11 patients with severe thoracic myelopathy due to OPLL. The OPLL was easily, safely, and completely removed or floated anteriorly by the pretreatments, including laminectomy, gutter making, and dekyphosis stabilization by a posterior approach. All 11 patients neurologically improved from 4.0 to 9.1 points on average in Japanese Orthopedic Association score.