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Table 4 Segmental (A) and cervical lordosis (B)

From: Anterior cervical discectomy and fusion: Comparison of titanium and polyetheretherketone cages

A) Segmental Lordosis (plain [°] mean ± SEM)
Variable TTN (n = 44) PEEK(n = 42) p-value
Operated Segment [°]    
  Pre-OP 2.71 ± 4.68 4.43 ± 3.37 0.054
  Post-OP 5.49 ± 3.85** 6.48 ± 3.67** 0.223
  Final 4.06 ± 3.65** 5.51 ± 4.13** 0.075
B) Cervical Lordosis (plain [°] mean ± SEM)
Variable TTN (n = 44) PEEK(n = 42) p-value
C2-7 [°]    
  Pre-OP 10.750 ± 14.44 16.31 ± 11.18 0.050
  Post-OP 14.034 ± 12.44* 17.64 ± 9.96* 0.143
  Final 13.140 ± 12.71 13.29 ± 7.06 0.288
  1. 4A: **significant differences (p < 0.031) comparing pre-OP with post-OP (=correction) as well as post-OP with final within the groups (=loss of correction).
  2. 4B: *significant differences (p < 0.048) comparing pre-OP with post-OP (=correction) within the groups.