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Table 1 Summary of demographic parameters and surgical parameters

From: May the midline lumbar interbody fusion (MIDLIF) prevent the early radiographic adjacent segment degeneration? A minimum 3-year follow-up comparative study of MIDLIF in L4/5 with cortical bone trajectory screw versus traditional pedicle screw fixation

Variable CBT Group N = 74 PS Group N = 114 p Value
Age (year) 67. 6 ± 9.8 62.7 ± 10.9 0.53
Sex(male/female) 30/44 57/57 0.23
BMI 27.52 ± 3.21 27.79 ± 5.56 0.71
Follow-up time(month) 39.23 ± 3.03 43.23 ± 7.12 0.19
BMD of lumbar spine(g/cm2) 0.71 ± 0.19 0.83 ± 0.27 0.22
Diagnosis(LSS/DDD) 60/14 81/33 0.17
Number of Inter-body cages(1/2) 60/14 96/18 0.69
Bone graft(autogenous/autogenous + allograft) 74/6 114/21 0.09
Symptomatic ASD 13 19 0.87
  1. BMI Body mass index, BMD Bone mineral density