Table 2 Patient demographic data (Non-revision group vs. revision group)
Non-revision group (n = 47) | Revision group (n = 19) | P value | |
|---|---|---|---|
Patient-related factors | |||
Age | 70.43 ± 7.39 | 66.74 ± 6.28 | 0.060 |
Gender (M/F) | 17/30 | 5/14 | 0.442 |
DM | 11 (23.4) | 5 (26.3) | 0.803 |
HTN | 29 (61.7) | 10 (52.6) | 0.497 |
CKD | 0 (0) | 1 (5.3) | 0.113 |
IHD | 7 (14.9) | 1 (5.3) | 0.278 |
Cancer | 0 (0) | 2 (10.5) | 0.024* |
Osteoporosis | 10 (21.3) | 10 (52.6) | 0.012* |
Modified H&Y stage | < 0.001* | ||
1 | 11 | 0 | |
1.5 | 10 | 1 | |
2 | 11 | 1 | |
2.5 | 5 | 1 | |
3 | 8 | 12 | |
4 | 2 | 4 | |
Surgery-related factors | |||
Blood loss (cc) | 1072.55 ± 1094.20 | 989.47 ± 836.26 | 0.767 |
Surgical levels | 0.094 | ||
≤ 3 | 28 (59.6) | 7 (36.8) | |
> 3 | 19 (40.4) | 12 (63.2) | |
T-spine instrumentation | 2 (4.3) | 3 (15.8) | 0.109 |
Interbody fusion | 29 (61.7) | 8 (42.1) | 0.146 |
Corrective osteotomy | 1 (2.1) | 3 (15.8) | 0.035* |
Combined anterior approach | 2 (4.3) | 1 (5.3) | 0.859 |
Radiographic parameters | |||
Pre OP- | |||
LL | 37.20 ± 17.29 | 42.75 ± 14.15 | 0.220 |
SS | 29.39 ± 9.44 | 32.67 ± 5.92 | 0.165 |
PT | 22.09 ± 10.40 | 22.81 ± 9.31 | 0.794 |
PI | 51.67 ± 10.40 | 55.48 ± 10.08 | 0.179 |
Post OP | |||
LL | 36.39 ± 14.08 | 38.74 ± 10.23 | 0.512 |
SS | 29.89 ± 9.21 | 30.17 ± 6.61 | 0.905 |
PT | 21.31 ± 9.13 | 21.81 ± 8.21 | 0.836 |
PI | 51.2 0 ± 9.31 | 51.98 ± 8.48 | 0.753 |
LL = PI ±9 | 20 (42.6) | 4 (21.1) | 0.100 |
PT < 20 | 20 (42.6) | 5 (26.3) | 0.218 |
Spino-pelvic realignment achievement | |||
0 | 20 (42.6) | 12 (63.2) | 0.224 |
1 | 14 (29.8) | 5 (26.3) | |
2 | 13 (27.7) | 2 (10.5) | |