Fig. 1.

Canal stenosis in the sagittal scans of spines. There is no stenosis (A). Stenosis was defined as obliteration of more than 50% of the subarachnoid space without any sign of cord deformity (B).

Canal stenosis in the sagittal scans of spines. There is no stenosis (A). Stenosis was defined as obliteration of more than 50% of the subarachnoid space without any sign of cord deformity (B).