The adaptive mechanism by which the spinal cord remained asymptomatic is unclear although such tolerance has also been demonstrated in patients with cervical spinal stenosis.

• 无法有一个合理的机制可以解释未引起脊髓症状的原因，虽然曾经有报道指出即使如此狭窄的颈椎椎管有的患者也能耐受。