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Table 4 Correlation between sagittal alignment parameters of 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

0.394#

0.166

− 0.166

− 0.840#

− 0.463#

− 0.536#

SA

 

1

0.042

− 0.144

− 0.344

− 0.091

− 0.192

T1S

  

1

− 0.027

0.395#

0.153

− 0.382

SVA

   

1

0.140

0.373

0.010

T1S-CL

    

1

0.515#

0.289

C2S

     

1

0.376

O-C2A

      

1

FFU

CL

1

0.182

0.357

− 0.243

− 0.635#

− 0.626#

− 0.450#

SA

 

1

0.115

− 0.238

− 0.074

− 0.025

− 0.064

T1S

  

1

0.285

0.495#

− 0.063

0.092

SVA

   

1

0.462#

0.343

0.173

T1S-CL

    

1

0.531#

0.495#

C2S

     

1

0.622#

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)