Fig. 3

Laminectomy with instrumented fusion (LF group). A 78-year-old male patient with progressive myelopathy and right C5 radiculopathy due to severe cervical OPLL (a–e). Preoperative X-ray, CT, and MRI images showed OPLL from C4 to C6, discontinuity between the rostral ossification regions and lordotic alignment of the cervical spine. f Postoperative X-ray showed laminectomy was performed between C3 and C6 segment with maintenance of cervical lordosis. g–j Postoperative CT and MR sagittal image showed decompression of the spinal cord