Table 4.
Changes in Global LL and SL With Surgery.a
| Parameter | Open TLIF | MIS TLIF |
|---|---|---|
| Lumbar lordosis (LL) | ||
| Increased | 23 (60.5%) | 23 (60.5%) |
| Unchanged | 8 (21.1%) | 10 (26.3%) |
| Decreased | 7 (18.4%) | 5 (13.2%) |
| Segmental lordosis (SL) | ||
| Increased | 21 (55.3%) | 25 (65.8%) |
| Unchanged | 12 (31.6%) | 12 (31.6%) |
| Decreased | 5 (13.2%) | 1 (2.6%) |
Abbreviations: MIS, minimally invasive surgery; TLIF, transforaminal lumbar interbody fusion.
a After surgery, an increase or decrease in LL or SL is defined as a change in measurement of ≥3° or ≤3° from preoperative, respectively.