The Kang classification was published in 2011[^1] and serves to classify cervical spinal canal stenoses into four different grades of severity based on the MRI imaging.
Classification
Grade
Description
Characteristic
Grade 0
No stenosis
No narrowing of the spinal canal.
Grade 1
Mild stenosis
Narrowing of more than 50% of the subarachnoid space without signs of spinal cord deformity.
Grade 2
Moderate stenosis
Spinal canal stenosis with deformation of the spinal cord but without T2 hyperintensity on MRI.
Grade 3
Severe stenosis
Hyperintense T2 signal in the spinal cord at the level of compression.
Figure
Illustration of the Kang classification from the original publication by Kang et al. (2011).
Figure of the Kang classification
Illustration of the Kang classification from the original publication by Kang et al. (2011).