Table 3

Overall success and components of success for 2-level TDR and ACDF.

TDRACDFDifference
Composite success60.8%34.6%26.2%*
NDI success79.0%58.0%21.0%†
Subsequent Surgery4.4%16.2%11.8%†
Neurologic failure6.4%17.1%10.7%†
Adverse events5.3%8.6%3.3%
Radiographic failure10.1%9.1%1.0%

  • ↵* Superiority of TDR vs. ACDF established with 95% lower confidence bound of difference > 0%.

  • ↵† p < 0.05; Fisher’s exact test.