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Table 3 Radiographic evaluation operation result

From: Augmented pedicle trajectory applied on the osteoporotic spine with lumbar degenerative disease: mid-term outcome

  PSA group TPS group P value
Pedicle screws 168 156  
Fusion segments 56 50  
Non-union rate 1/56 7/50 0.028*
Loosening rate 2/168 8/156 0.047*
Lumber lordosis (°)    
 Pre-operation 32.71 ± 11.71 29.83 ± 13.87 0.415
 Post-operation 32.02 ± 10.41 28.60 ± 11.17 0.251
 Final follow-up 34.59 ± 11.80 30.47 ± 10.05 0.173
Operation time (min) 266.30 ± 14.51 204.90 ± 10.35 0.002*
Blood loss (ml) 605.0 ± 121.90 648.10 ± 89.77 0.725
Hospital stays (day) 23.69 ± 1.44 19.44 ± 1.18 0.026*
Number of subsidence cage (one/two) 12/12 11/8 0.606
Position of subsidence cage    0.983
 Anterior middle posterior 16 13  
 Anterior middle 6 4  
 Middle posterior 2 2  
Subsidence height(mm) 5.30 ± 1.92 4.78 ± 1.37 0.606
  1. Note: *P<0.05