Fig. 2

Simple operative schema of the thoracic parallel endplate osteotomy (PEO) procedure. A, B and C The resection region (the pedicle of the vertebral arch, 4/5 of the posterior vertebra, the bilateral walls of the vertebra and the posterior wall of the vertebra) is marked. D The temporary stabilizing rod is placed to the concave side to complete spinal canal decompression and PEO is performed. E and F Compression over the resected area and shortening of the spine are performed to reduce tension on the spinal cord. The surgeon then bends the rod in situ on the coronal plane or sagittal plane for correction and observes the migration of the dural sac; compression and bending of rods on both the convex and concave sides are undertaken to adjust tension of the spinal cord