Up to 10% of patients with<unk>  arthritis are at risk of sudden death due to unrecognized cord compression. Thus surgical intervention is a reasonable choice in the presence of a neurologic deficit as a result of instability. In fact, early surgery for atlantoaxial subluxation may actually delay the debilitating progress of myelopathy.
Rheumatoid disease of the spine
Spondylolysis
Spondylosis deformans
Neuropathic arthropathy
Axial spondyloarthritis
Ankylosing spondylitis
Spinal disc herniation
Vertebral osteomyelitis