Figure 1.

Cervical magnetic resonance images of a 49-year-old male patient with cervical spondylotic myelopathy and kyphotic alignment. He complained of severe hand clumsiness and whole-body numbness. His total Japanese Orthopaedic Association (JOA) score was 12 (I-0, II-4, III-5 and IV-3, respectively). The measured values were as follows: 3.7 mm (a), 3.9 mm (b), 12.9 mm (w), 1.8 mm (A), 3.7 mm (B) and 14.6 mm, respectively (W). The anterior length of the spinal cord decreased from 3.7 mm to 1.8 mm, but the posterior length slightly decreased from 3.9 mm to 3.7 mm.