Table 3

- Comparison of anterior height of vertebral body and VAS score between the 2 groups before and after operation (Mean±SD).

GroupsAnterior height of vertebral bodyVAS score
Unilateral19.6±6.523.7±5.3 a8.2±2.12.2±1.6 a
Bilateral19.2±6.122.9±5.1ab8.5±2.52.2±1.3 ab
  • The corresponding p-values of a1, a2, a3 and a4 are 0.036, 0.037, 0.002 and 0.001; The corresponding P-values of b1 and b2 are 0.108 and 0.065.

  • a Compared with preoperatively, the difference was statistically significant (p<0.05);

  • b compared with the unilateral group, the difference was not statistically significant (p>0.05)