Skip to main content

Table 1 Patient demographics data

From: The effects of anterior vacuum disc on surgical outcomes of degenerative versus spondylolytic spondylolisthesis: at a minimum two-year follow-up

  Degenerative group (n = 22) Isthmic group (n = 20) p- value
Age, mean ± SD, y 65.59 ± 7.74 57.30 ± 9.09 0.003
Sex, female/male, n 12/10 16/4 0.81
Operating time, mean ± SD, min 187.82 ± 37.49 191.65 ± 46.67 0.770
Blood loss, mean ± SD, cc 474.09 ± 331.31 387.25 ± 251.39 0.348
Hospital stay, mean ± SD, d 7.82 ± 2.40 8.10 ± 2.20 0.695
Level (n)    
L3-4 2 0  
L4-5 17 4 <0.001
L5-S1 3 16  
Vacuum type, n    
Static view 12 16  
Flexion view 0 8 <0.001
Extension view 22 20  
Comorbidity, n(%) 15(68.1) 8(40) 0.067
Perioperative complications, n(%) 3(13.6) 2(10) 0.716
Adjacent segment disease, n(%) 3(13.6) 1(5) 0.341
Revision surgery, n(%) 4(18.1) 2(10) 0.449
Fused segments, n(%) 25(56.8) 36(90) 0.019