Effect and potential risks of using multilevel cement-augmented pedicle screw fixation in osteoporotic spine with lumbar degenerative disease

Table 2 Comparison of the operation and clinical effects of two groups

Factors	CAPSI group(n = 46)	CPS group(n = 47)		P value
Operation time(min)	303.07 ± 61.25	268.72 ± 64.46	t = 2.633	0.010
Blood loss(ml)	1176.09 ± 763.82	1072.34 ± 838.46	t = 0.485	0.629
Hospital stay(days)	24.54 ± 8.82	20.85 ± 8.78	t = 2.023	0.046
Complications (n)	15	10	x² = 1.526	0.249
Post-operation LL(°)	39.59 ± 10.55^a	41.57 ± 9.27^a	t = −0.958	0.341
Post-operation PT(°)	21..47 ± 10.18	17.92 ± 10.14	t = 1.684	0.096
Post-operation PI(°)	49.47 ± 12.59	52.03 ± 12.81	t = −0.984	0.327
Screw loosening(n)	3/336	33/390	x² = 23.996	0.000
Nonunion patients(n)	3	4	x² = 0.133	1.000
Post-operation VAS	4.19 ± 1.13^a	4.02 ± 1.39^a	t = 1.973	0.052
Post-operation ODI	39.30 ± 7.11^a	36.29 ± 7.58^a	t = 0.663	0.509

^a Significantly greater than the value found in preoperation
CAPSI Cement-augmented pedicle screw instrumentation, CPS Conventional pedicle screw, LL Lumbar lordosis, PT Pelvic title, PI Pelvic incidence, VAS Visual Analogue Scale, ODI Oswestry Disability Index

ISSN: 1471-2474