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Table 1 Results of demographics

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

  PSA group TPS group P value
Cases 28 28  
Male/female 2/26 3/25 1.000
Diagnosis (LSS/spondylolisthesis) 15/13 18/10 0.587
Age (years) 67.12 ± 1.31 66.04 ± 1.08 0.527
Follow-up time (month) 35.04 ± 7.39 33.61 ± 5.36 0.412
BMD − 3.02 ± 0.17 − 3.01 ± 0.12 0.971
BMI 24.38 ± 0.72 24.59 ± 0.61 0.828
Size of subsidence cage    
 Height (mm) 10.92 ± 0.77 10.96 ± 0.76 0.813
 Length (mm) 23.67 ± 2.00 24.37 ± 2.00 0.173
Bone graft    0.752
 Allograft bone 7 6  
 Autogenous iliac crest bone 21 22  
 Fusion segment (single/double/multiple) 6/16/6 12/10/6 0.184