spondylotic radiculopathy 脊髓型 cervical spondylotic myelopathy radiation to the spine, what sign is an indicator of myelopathy clinical deterioration of cervical spondylotic myelopathy degenerative myelopathy, disk disease, ivdd, hip dysplasia footprint 2-level fusion ar ╟ 3 - level psf pb ╟ myelopathy