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Table 3 Clinical outcomes

From: Classification of three-level hybrid surgery for the treatment of cervical degenerative disc disease: a retrospective study of 108 patients

  Type I Type II ACDF p value* p value†
I vs. II I vs. ACDF II vs. ACDF
VAS score of neck        
 Pre-op 5.04 ± 1.32 4.59 ± 1.35 5.13 ± 1.23 0.209 0.127 0.805 0.127
 Po-3 m 2.33 ± 0.63 2.62 ± 1.02 2.5 ± 0.72 0.265 0.109 0.388 0.581
Po-6 m 1.98 ± 0.61 2.06 ± 0.65 1.83 ± 0.48 0.370 0.553 0.339 0.161
 Po-12 m 1.5 ± 0.84 1.76 ± 0.89 1.42 ± 0.72 0.226 0.161 0.691 0.119
 The final 0.87 ± 0.78 1 ± 0.7 0.83 ± 0.64 0.627 0.426 0.842 0.388
VAS score of arms        
 Pre-op 4.15 ± 1.61 4.41 ± 1.86 4.83 ± 1.09 0.242 0.474 0.093 0.324
 Po-3 m 1.87 ± 0.93 1.88 ± 0.81 2 ± 0.78 0.822 0.948 0.548 0.609
 Po-6 m 1.26 ± 0.99 1.59 ± 0.92 1.29 ± 0.75 0.262 0.120 0.895 0.231
 Po-12 m 1.13 ± 0.96 1.29 ± 0.84 1.08 ± 0.72 0.600 0.406 0.830 0.365
 The final 0.87 ± 1.13 0.79 ± 0.64 0.54 ± 0.59 0.334 0.706 0.143 0.286
JOA score        
Pre-op 10.17 ± 1.34 10.06 ± 1.13 9.75 ± 0.74 0.348 0.661 0.148 0.319
 Po-3 m 14.24 ± 1.14 13.88 ± 1.09 14.04 ± 0.95 0.346 0.149 0.471 0.583
Po-6 m 14.83 ± 1.27 14.76 ± 0.99 15.04 ± 0.95 0.631 0.808 0.445 0.354
 Po-12 m 15.39 ± 1.32 15.12 ± 0.98 15.5 ± 0.88 0.393 0.286 0.703 0.207
 The final 16.2 ± 1.28 16.24 ± 0.82 16.42 ± 0.78 0.692 0.867 0.401 0.514
NDI        
 Pre-op 29.67 ± 4.12 28.12 ± 4.37 29.92 ± 4.02 0.173 0.103 0.818 0.110
 Po-3 m 15.54 ± 3.66 15.65 ± 3.87 17.79 ± 2.48 0.029 0.896 0.012 0.024
 Po-6 m 11.65 ± 3.99 11.59 ± 3.91 12.54 ± 2.5 0.564 0.939 0.339 0.333
 Po-12 m 8.3 ± 4.13 9.56 ± 4.26 9.92 ± 2.81 0.187 0.159 0.105 0.732
 The final 5 ± 5.91 5.47 ± 3.37 6.29 ± 2.53 0.532 0.649 0.262 0.500
  1. ACDF anterior cervical discectomy and fusion, JOA Japanese Orthopedic Association, NDI neck disability index, VAS visual analog scale
  2. *ANOVA test
  3. SNK test