Skip to main content

Table 4 Comparisons on NDI and JOA among ACDF, HS1, and HS2

From: Exploration on sagittal alignment and clinical outcomes after consecutive three-level hybrid surgery and anterior cervical discectomy and fusion: a minimum of a 5-year follow-up

 ACDFHS1HS2P
NDI at pre-op38.0 ± 3.038.9 ± 3.937.9 ± 2.10.230
NDI at 1 week later19.3 ± 6.919.9 ± 4.419.3 ± 5.10.875
NDI at final follow-up12.5 ± 8.210.7 ± 3.311.8 ± 2.20.163
Δ1 NDI19.0 ± 6.919.9 ± 5.018.5 ± 3.70.792
Δ2 NDI25.8 ± 8.228.8 ± 5.627.2 ± 2.00.215
P1 (NDI)< 0.001< 0.001< 0.001 
P2 (NDI)< 0.001< 0.001< 0.001 
P3 (NDI)< 0.001< 0.0010.009 
JOA at pre-op10.3 ± 1.911.0 ± 1.711.3 ± 1.50.125
JOA at 1 week later14.6 ± 1.414.9 ± 0.815.3 ± 0.50.433
JOA at final follow-up15.7 ± 1.916.2 ± 1.115.8 ± 1.00.406
RR1 JOA (%)63.8 ± 23.563.4 ± 13.256.3 ± 18.50.740
RR2 JOA (%)81.8 ± 29.487.0 ± 18.171.0 ± 21.00.361
P1 (JOA)< 0.001< 0.0010.002 
P2 (JOA)< 0.001< 0.0010.001 
P3 (JOA)0.018< 0.0010.456 
  1. NDI neck disability index, JOA Japanese Orthopedic Association score, ACDF, anterior cervical discectomy and fusion, HS hybrid surgery, HS1 one prosthesis and 2 cages, HS2 two prostheses and one cage, Pre-op preoperation, P1 significance between pre-op and 1 week after surgery, P2 significance between pre-op and final follow-up, P3 significance between 1 week after surgery and final follow-up
  2. “Δ1” is the change of variable at 1 week after surgery compared to baseline and “Δ2” is the change of variable at final follow-up compared to baseline