Zhu JJ, Wang Y, Zheng J, Du SY, Cao L, Yang YM, Zhang QX, Xie DD. Risk factors and clinical significance of posterior slip of the proximal vertebral body after lower lumbar fusion. World J Clin Cases 2024; 12(26): 5885-5892 [PMID: 39286370 DOI: 10.12998/wjcc.v12.i26.5885]
Corresponding Author of This Article
Ding-Ding Xie, MM, Attending Doctor, Department of Spinal Surgery, Xuzhou First People’s Hospital, No. 269 Daxue Road, Xuzhou 221112, Jiangsu Province, China. dd2225@126.com
Research Domain of This Article
Orthopedics
Article-Type of This Article
Retrospective Cohort Study
Open-Access Policy of This Article
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
World J Clin Cases. Sep 16, 2024; 12(26): 5885-5892 Published online Sep 16, 2024. doi: 10.12998/wjcc.v12.i26.5885
Table 1 Patient demographic data, mean ± SD
Nonretrograde group
Retrograde group
t value
P value
Age (year)
51.7 ± 10.6
52.4 ± 11.3
0.258
0.797
Sex (male/female)
18/54
4/15
0.128
0.721
Operation time (minute)
257.3 ± 46.9
264.7 ± 43.8
0.619
0.540
Blood loss (mL)
219.6 ± 49.3
207.7± 56.5
0.907
0.367
Follow-up time (month)
27.4 ± 6.3
26.9 ± 7.0
Fixed segment
2.4 ±0.69
2.5 ± 0.74
0.554
0.581
Fusion segment
1
59
14
0.646
0.421
2
13
5
Fixation of S1
Yes
12
5
0.921
0.337
No
60
14
Table 2 Radiography parameters of the two groups, mean ± SD
Nonretrograde group
Retrograde group
t value
P value
PI (°)
Preoperative
47.9 ± 9.2
57.8 ± 10.6
4.041
< 0.001
Postoperative
49.2 ± 9.6
58.1 ± 11.4
3.454
0.008
Final follow-up
49.6 ± 10.3
57.2 ± 11.9
2.768
< 0.001
PT (°)
Preoperative
20.5 ± 6.2
21.5 ± 6.4
0.621
0.536
Postoperative
15.6 ± 4.4
14.8 ± 5.6
0.665
0.508
Final follow-up
14.9 ± 3.9
15.3 ± 5.0
0.374
0.709
SS (°)
Preoperative
27.9 ± 8.3
35.1 ± 8.2
3.371
< 0.001
Postoperative
35.8 ± 7.9
42.7 ± 10.8
3.123
0.002
Final follow-up
37.1 ± 9.4
41.9 ± 7.7
2.049
0.043
LL (°)
Preoperative
34.1 ± 10.2
38.9 ± 14.8
1.649
0.103
Postoperative
48.7 ± 12.6
57.1 ± 10.6
2.664
0.009
Final follow-up
48.9 ± 9.7
56.3 ± 9.2
2.988
0.003
lLL (°)
Preoperative
24.9 ± 4.8
27.0 ± 6.8
1.546
0.126
Postoperative
38.1 ± 8.9
38.7 ± 9.9
0.255
0.799
Final follow-up
37.4 ± 9.6
38.9 ± 8.5
0.619
0.537
uLL (°)
Preoperative
8.1 ± 3.4
10.9 ± 4.7
2.934
0.004
Postoperative
12.5 ± 4.3
18.2 ± 6.4
4.605
< 0.001
Final follow-up
12.7 ± 5.6
17.6 ± 5.4
3.417
< 0.001
Table 3 Lumbar sagittal images of the patients in the two groups, mean ± SD
Nonretrograde group
Retrograde group
t value
P value
|PI-LL| (°)
Preoperative
13.9 ± 5.2
15.3 ± 5.8
1.019
0.311
Postoperative
1.9 ± 4.3
1.4 ± 3.6
0.465
0.643
Final follow-up
0.9 ± 2.1
1.2 ± 3.0
0.671
0.504
PI-LL matching
Yes
63
16
0.142
0.706
No
9
3
LDI (%)
Preoperative
75.9 ± 14.9
71.1 ± 16.7
1.217
0.226
Postoperative
75.7 ± 10.4
68.1 ± 11.5
2.772
0.006
Final follow-up
74.3 ± 9.4
67.2 ± 11.9
2.764
0.006
Distribution of LL
LDI < 50%
6
7
49.937
< 0.001
50% ≤ LDI < 80%
64
12
80 ≤ LDI
2
0
Table 4 Quality of life of the patients in the two groups, mean ± SD
Nonretrograde group
Retrograde group
t value
P value
ODI score
Preoperative
41.4 ± 11.9
40.8 ± 10.3
0.201
0.841
Postoperative
21.1 ± 7.2
26.1 ± 7.4
2.677
< 0.001
Final follow-up
18.0 ± 6.3
24.2 ± 4.6
4.009
< 0.001
VAS score
Preoperative
7.0 ± 2.2
7.4 ± 2.5
0.685
0.495
Postoperative
2.2 ± 1.2
3.1 ± 1.6
2.703
0.008
Final follow-up
1.8 ± 1.1
2.9 ± 1.4
3.654
< 0.001
Citation: Zhu JJ, Wang Y, Zheng J, Du SY, Cao L, Yang YM, Zhang QX, Xie DD. Risk factors and clinical significance of posterior slip of the proximal vertebral body after lower lumbar fusion. World J Clin Cases 2024; 12(26): 5885-5892