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Table 2 Comparison of imaging index between the two groups (x ± s)

From: The effect of dural release on extended laminoplasty for the treatment of multi-level cervical myelopathy

Group Cases Distance of retroposition of the spinal cord (mm) Cervical lordosis
Preoperative Last follow-up t and p value
A 35 3.63 ± 2.06 19.55 ± 6.81 16.78 ± 7.92 t = 1.536, p = 0.142
B 38 2.05 ± 0.93 18.94 ± 8.73 18.22 ± 5.79 t = 1.784, p = 0.089
t and p value   t = 7.256, p < 0.001 t = 0.223, p = 0.854 t = 0.359, p = 0.782