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. 2015 Jul 9;6(2):155–163. doi: 10.1055/s-0035-1557140

Fig. 4.

Fig. 4

Bar graph shows the dynamic changes in spinal canal diameter (mean ± standard deviation) during flexion and extension of the cervical spine in group FVI (patients with ligamentum flavum hypertrophy ≥1 mm from flexion to extension), group FVII (patients with ligamentum flavum hypertrophy < 1 mm and > 0 mm from flexion to extension), and group FVIII (patients with ligamentum flavum hypertrophy < 1 mm and > 0 mm from flexion to extension). Changes in spinal canal diameter in group FVI were compared with those in groups FVII and FVIII. *p < 0.05.