Table 4.
Difference of Patients’ Characteristics Classified by PI-LL.
| PI-LL <10° | PI-LL ≥10° | P | |
|---|---|---|---|
| Number | 10 | 13 | |
| Age, years (mean ± SD) | 71.1 ± 8.6 | 71.5 ± 7.4 | .91 |
| Sex, male–female | 2:8 | 0:13 | .18 |
| Preoperative BMI (kg/m2) | 23.3 ± 3.8 | 24.9 ± 3.7 | .69 |
| Preoperative BMD (g/cm2) | 1.04 ± 0.31 | 0.74 ± 0.17 | .03 |
| T-score | −1.5 ± 1.3 | −1.6 ± 1.0 | .86 |
| L5-S1 PLIF | +: 8, −: 2 | +: 8, −: 5 | .97 |
| L5-S1 fusion rate | 87.5% | 62.5% | .67 |
| Osteotomy (PSO or pVCR) | +: 2, −: 8 | +: 2, −: 11 | .77 |
| OLIF | +: 6, −: 4 | +: 8, −: 5 | .94 |
| Reoperation rate | 20.0% (2/10) | 23.1% (3/13) | .86 |
| ODI | |||
| Preoperative | 53.7 ± 10.7 | 45.7 ± 12.8 | .20 |
| Last follow-up | 29.1 ± 21.1 | 31.1 ± 15.6 | .81 |
Abbreviations: PI, pelvic incidence; LL, lumbar lordosis; BMI, body mass index; BMD, bone mineral density; PLIF, posterior lumbar interbody fusion; PSO, pedicle subtraction osteotomy; pVCR, posterior vertebral column resection; OLIF, oblique lumbar interbody fusion; ODI, Oswestry Disability Index.
Boldface indicates significant difference with P value < .05.