Table 7

Overall success and components of success for 1-level TDR and ACDF.

TDRACDFDifference
Composite success55.2%50.0%5.2%*
Subsequent Surgery3.0%12.3%9.3%†
Radiographic failure9.3%4.5%4.8%
Adverse events6.1%3.7%2.4%
NDI success76.5%77.8%1.3%
Neurologic failure11.4%11.5%0.1%

  • ↵* Non-inferiority of TDR vs. ACDF established with 95% lower confidence bound of difference > -10%.

  • ↵† p < 0.05; Fisher’s exact test.