Evaluation of Dynamic Foraminal Stenosis with Positional MRI in Patients with C6 Radiculopathy-Mimicking Pain: A Prospective Radiologic Cohort Study

Table 1

Summary of measurements in terms of foraminal area and spinal cord diameter at C5-C6 level.

Measurement	Right FA (mm^2)	Left FA (mm^2)	SCD (mm)	FA right vs. left
Neutral
Mean	67.80	65.93	11.04
Range	52.35-93.61	52.06-95.53	9.4-13.6
Sd	±12.92	±12.31	±1.53
Flexion
Mean	74.1	71.67	11.30
Range	55.32-98.98	53.6-101.4	9.81-14.54
Sd	±14.19	±13.69	±1.57
value	<0.001	<0.001	0.369
Extension
Mean	62.69	62.48	10.65
Range	50.23-87.41	50.11-89.8	8.67-13.1
Sd	±11.49	±11.69	±1.58
value	<0.001	<0.001	0.035

FA: foraminal area; SCD: spinal canal diameter; Sd: standard deviation.