CRP and infection: Blood infection parameters were relatively high before surgery in both groups (ACDF: CRP, 156.5 ± 12.7 mg/L; leukocytes, 13.6 ± 5.6 × 109/L vs. corpectomy: CRP, 120.0 ± 22.3 mg/L; leukocytes, 13.1 ± 8.0 × 109/L; p > 0.05).