Comparison of unilateral and bilateral polymethylmethacrylate-augmented cannulated pedicle screw fixation for the management of lumbar spondylolisthesis with osteoporosis

Table 3 Comparison of the ODI between 2 groups preoperatively, immediately after surgery, and at final follow-up

Group	n	Preoperatively	Immediately after surgery	Final follow-up
UC	29	51.9 ± 10.4	10.0 ± 6.1*	9.8 ± 0.8, *
BC	21	54.0 ± 10.9	11.3 ± 0.4*	10.5 ± 0.5, , **
Statistics		t = 0.717, P = 0.395	t = 5.143, P = 0.176	t = 1.003, P = 0.246

ODI Oswestry disability index, UC unilateral PMMA-augmented CPSs, BC bilateral PMMA-augmented CPSs
Values presented are the mean ± SD
Significant if P < 0.05
*P < 0.05 vs. preoperatively values
**P > 0.05 vs. immediately after surgery values
***P > 0.05 vs. final follow-up values of the UC group

ISSN: 1749-799X