Table 1.
The demographic data of the patients of OLIF, OLIF-AF, and OLIF-PF groups
| Variable | All (n = 71) | OLIF (n = 25) | OLIF-AF (n = 19) | OLIF-PF (n = 27) | p-value | |
|---|---|---|---|---|---|---|
| Age (yr) | 64.8 ± 10.6 (34–88) | 65.2 ± 10.9 (34–88) | 66.9 ± 8.7 (48–84) | 62.8 ± 11.4 (43–85) | 0.424 | |
| Female sex | 48 | 18 (72) | 18 (94.7) | 12 (44.4) | 0.001* | |
| Overweight, BMI > 25 kg/m2 | 36 | 14 (56) | 9 (47.4) | 13 (48) | 0.804 | |
| Diabetes | 14 | 7 (28) | 2 (10.5) | 5 (18.5) | 0.346 | |
| Smoker | 9 | 2 (8) | 1 (5) | 6 (22) | 0.160 | |
| Bone density† (CT H > 120) | 28 | 11 (44) | 3 (15.8) | 14 (51.8) | 0.075 | |
| Levels fused | - | |||||
| L2–3 included (%) | 6 | 4 (16) | 2 (10.5) | 0 (0) | ||
| L3–4 included (%) | 29 | 10 (40) | 9 (47) | 10 (37) | ||
| L4–5 included (%) | 59 | 21 (84) | 18 (94) | 20 (74) | ||
| Follow-up‡ | - | |||||
| 1-Year (%) | 51 | 12 (48) | 14 (73.4) | 25 (92.5) | ||
| 2-Year (%) | 12 | 11 (44) | 1 (5) | 0 (0) | ||
| > 3-Year (%) | 8 | 2 (8) | 4 (21) | 2 (7.4) | ||
Values are presented as mean±standard deviation, median (range), or percentages.
OLIF, oblique lateral interbody fusion; OLIF-AF, OLIF combined with anterolateral screw fixation; OLIF-PF, OLIF combined with percutaneous pedicle screw fixation; BMI, body mass index; CT HU, computed tomography Hounsfield units.
*
Statistically significant at p<0.05.
†
The bone density was presented as continuous variable based on lumbar CT HU value.
‡
Time from discharge to final follow-up (mo).