Treatment of Kümmell’s disease with sequential infusion of bone cement: A retrospective study

Table 1 The baseline data in both groups

Variable	TSI group	SI group	P value
Number of patients	24	21
Female/male	20/4	18/3	1.000
Age in yr, mean ± SD	65.45 ± 5.20	66.19 ± 4.80	0.593
Damaged segment number, T/TL/L	3/16/5	2/15/4	0.930
BMD, mean ± SD	-3.04 ± 0.31	-2.96 ± 0.28	0.335

Note: Statistical significance was set at P < 0.05. BMD: Bone mineral density; L: Lumbar region; SD: Standard deviation; SI: Sequential infusion; T: Thoracic region; TL: Thoracolumbar region; TSI: Traditional single infusion.

Table 2 Visual analog scale and Oswestry disability index before and after surgery

Variable	TSI group	SI group	P value
VAS, M, min, max
Preoperatively	6 (5, 8)	6 (5, 8)	0.576
1 wk postoperatively	2 (1, 3)1	2 (1, 3)1	0.868
At final follow-up	2 (1, 3)1	2 (1, 3)1	0.785
ODI, %, mean ± SD
Preoperatively	65.42 ± 3.26	64.54 ± 4.56	0.421
1 wk postoperatively	30.55 ± 1.791	30.54 ± 2.981	0.981
At final follow-up	29.44 ± 1.561	28.65 ± 1.941	0.139

¹Indicates significant differences in comparison with preoperative values (statistical significance was set at P < 0.05). M: Median; Max: Maximum; Min: Minimum; ODI: Oswestry disability index; SD: Standard deviation; SI: Sequential infusion; TSI: Traditional single infusion; VAS: Visual analog scale.