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Table 1 Comparison of clinical data between groups 1 and 2

From: Minimally invasive pedicle screw fixation combined with percutaneous vertebroplasty for preventing secondary fracture after vertebroplasty

  Group 1 Group 2 P value
Age (years) 75.1 ± 5.5 73.9 ± 6.4 0.355
Gender (F/M) 24/13 23/8 0.572
BMI (kg/m2) 23.1 ± 3.3 23.3 ± 3.4 0.883
BMD (T-score) −3.4 ± 0.8 −3.5 ± 0.9 0.517
Fracture level T11 3 2 0.597
T12 9 12
L1 19 14
L2 6 3
PMMA amount (ml) 5.7 ± 1.1 6.1 ± 1.4 0.232
duration of operation (minutes) 43.4 ± 5.0 74.7 ± 8.6 0.000*
blood loss (ml) 5.5 ± 1.5 70.2 ± 4.7 0.000*
stay at hospital (days) 3.2 ± 0.4 5.3 ± 1.0 0.000*
Follow-up period (months) 27.4 ± 2.5 27.2 ± 2.5 0.742
  1. * P < 0.05.