Augmented pedicle trajectory applied on the osteoporotic spine with lumbar degenerative disease: mid-term outcome

Table 3 Radiographic evaluation operation result

	PSA group	TPS group	P value
Pedicle screws	168	156
Fusion segments	56	50
Non-union rate	1/56	7/50	0.028*
Loosening rate	2/168	8/156	0.047*
Lumber lordosis (°)
Pre-operation	32.71 ± 11.71	29.83 ± 13.87	0.415
Post-operation	32.02 ± 10.41	28.60 ± 11.17	0.251
Final follow-up	34.59 ± 11.80	30.47 ± 10.05	0.173
Operation time (min)	266.30 ± 14.51	204.90 ± 10.35	0.002*
Blood loss (ml)	605.0 ± 121.90	648.10 ± 89.77	0.725
Hospital stays (day)	23.69 ± 1.44	19.44 ± 1.18	0.026*
Number of subsidence cage (one/two)	12/12	11/8	0.606
Position of subsidence cage			0.983
Anterior middle posterior	16	13
Anterior middle	6	4
Middle posterior	2	2
Subsidence height(mm)	5.30 ± 1.92	4.78 ± 1.37	0.606

ISSN: 1749-799X