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Table 2 Dimensional parameters of the cervical pedicles obtained using MD-CT reconstruction

From: Morphometric evaluation of subaxial cervical spine using multi-detector computerized tomography (MD-CT) scan: the consideration for cervical pedicle screws fixation

Vertebra OPW   IPW   OPH   IPH  
  Rt Lt p value Rt Lt p value Rt Lt p value Rt Lt p value
C3             
Overall 4.81 ± 0.83 4.72 ± 0.95 0.54 2.39 ± 0.63 2.44 ± 0.68 0.64 5.78 ± 0.76 5.72 ± 0.72 0.62 2.98 ± 0.80 2.90 ± 0.79 0.54
Male 5.18 ± 0.81 5.18 ± 0.87   2.67 ± 0.66 2.75 ± 0.68   6.05 ± 0.66 6.05 ± 0.66   3.21 ± 0.75ns 3.29 ± 0.81  
Female 4.43 ± 0.68 4.27 ± 0.80   2.10 ± 0.45 2.13 ± 0.53   5.51 ± 0.76 5.40 ± 0.64   2.75 ± 0.79 2.51 ± 0.55  
C4             
Overall 4.85 ± 0.85 4.87 ± 0.89 0.89 2.39 ± 0.59 2.58 ± 0.77 0.09 6.01 ± 0.80 5.98 ± 0.80 0.82 3.18 ± 0.77 3.04 ± 0.74 0.26
Male 5.10 ± 0.87# 5.24 ± 0.76   2.56 ± 0.64ns 2.89 ± 0.73   6.37 ± 0.72 6.32 ± 0.74   3.43 ± 0.80# 3.35 ± 0.75  
Female 4.59 ± 0.76 4.51 ± 0.86   2.21 ± 0.47 2.27 ± 0.69   5.64 ± 0.71 5.64 ± 0.71   2.94 ± 0.66 2.72 ± 0.60  
C5             
Overall 5.28 ± 0.88 5.28 ± 0.94 >0.99 2.72 ± 0.72 2.83 ± 0.77 0.37 5.81 ± 0.71 5.77 ± 0.76 0.74 2.97 ± 0.73 3.02 ± 0.70 0.67
Male 5.64 ± 0.85 5.78 ± 0.82   2.91 ± 0.79ns 3.10 ± 0.65#   6.16 ± 0.60 6.02 ± 0.64   3.21 ± 0.62ns 3.24 ± 0.59#  
Female 4.91 ± 0.75 4.78 ± 0.78   2.54 ± 0.60 2.56 ± 0.80   5.45 ± 0.64 5.51 ± 0.80   2.72 ± 0.76 2.81 ± 0.73  
C6             
Overall 5.50 ± 0.98 5.51 ± 0.87 0.94 2.95 ± 0.81 3.08 ± 0.75 0.31 5.90 ± 0.87 5.94 ± 0.80 0.77 3.13 ± 0.86 3.12 ± 0.70 0.93
Male 5.72 ± 1.01ns 5.78 ± 0.88#   3.16 ± 0.83# 3.24 ± 0.79ns   6.13 ± 0.88# 6.24 ± 0.68ns   3.48 ± 0.83 3.40 ± 0.68  
Female 5.27 ± 0.90 5.24 ± 0.79   2.75 ± 0.76 2.91 ± 0.68   5.67 ± 0.81 5.64 ± 0.82   2.78 ± 0.75 2.83 ± 0.60  
C7             
Overall 6.54 ± 0.99 6.60 ± 1.00 0.72 3.82 ± 0.98 4.09 ± 1.03 0.10 6.83 ± 0.82 6.72 ± 0.91 0.44 3.93 ± 0.92 3.82 ± 0.86 0.45
Male 6.91 ± 1.03 7.00 ± 0.97   4.27 ± 0.93 4.51 ± 0.96   7.21 ± 0.71 7.05 ± 0.77   4.37 ± 0.79 4.13 ± 0.78  
Female 6.16 ± 0.79 6.21 ± 0.88   3.37 ± 0.82 3.67 ± 0.94   6.45 ± 0.76 6.40 ± 0.92   3.48 ± 0.83 3.51 ± 0.83  
  1. Data showed by means ± standard deviation (mm); p value, demonstrated the statistical difference among right and left pedicles atthe representative level; male is larger pedicle dimension compared to female with p < 0.01 in all parameters except, #significant with p < 0.05, NSno significant between gender (calculated by Unpaired t test); Rt, right pedicle; Lt, left pedicle.