Fig. 4From: Reliability and clinical validity of the Kang MRI grading system for cervical central spinal stenosisExample of grade 1 stenosis. A 50-year-old female with cervical pain. Sagittal T2-weighted image shows ≥ 50% narrowing of the anterior subarachnoid space at C4–5 and C5–6 levels (arrows). No demonstrable cord deformity or cord signal changeBack to article page