Unilateral open-door laminoplasty involving C1 for developmental atlantal canal stenosis combined with multilevel cervical stenosis: a case report

Developmental atlantal canal stenosis is a rare cause of high cervical myelopathy. When combined with multilevel subaxial cervical stenosis, even minor trauma may result in severe neurological deficits. Surgical management remains challenging, particularly when C1 is involved, as laminoplasty is conventionally limited to C3-C7. A 55-year-old male presented with acute cervical pain accompanied by quadriparesis following a low-energy fall. Neurological examination revealed severe cervical myelopat