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Table 5 Correlation between sagittal alignment parameters of type I and type II

From: Cervical sagittal balance after consecutive three-level hybrid surgery versus anterior cervical discectomy and fusion: radiological results from a single-center experience

 

CL

SA

T1S

SVA

T1S-CL

C2S

O-C2A

Pre

CL

1

0.503#

0.201

− 0.265#

− 0.754#

− 0.575#

− 0.560#

SA

 

1

0.277#

− 0.135

− 0.262#

− 0.339#

− 0.459#

T1S

  

1

0.193

0.491#

0.228

− 0.146

SVA

   

1

0.365#

0.467#

0.144

T1S-CL

    

1

0.664#

0.400#

C2S

     

1

0.493#

O-C2A

      

1

FFU

CL

1

0.337#

0.260#

− 0.250#

− 0.675#

− 0.440#

− 0.363#

SA

 

1

0.160

− 0.022

− 0.173

0.018

− 0.066

T1S

  

1

0.288#

0.536#

0.139

0.104

SVA

   

1

0.439#

0.340#

0.181

T1S-CL

    

1

0.491#

0.397#

C2S

     

1

0.483#

O-C2A

      

1

  1. Bold values indicate statistically different
  2. Pre preoperative, FFU final follow-up, CL cervical lordosis, SA segment alignment, T1S T1 slope, SVA sagittal vertical axis, C2S C2 slope, O-C2A occipital to C2 angle
  3. #Significant correlation between parameters (p < 0.05)