Three patients with single-level L4–5 degenerative spondylolisthesis underwent UBE-TLIF using an expandable-first, PEEK-second hybrid dual-cage technique. Early clinical and radiographic outcomes were favorable over 12 weeks.
Key findings
- All three cases improved clinically and radiographically in the short term
- No cage subsidence or migration was observed
- Larger and longer studies are required
Why this matters globally
The technique may improve controlled disc-space distraction and cage placement in UBE-TLIF.
Thai researcher contribution
The listed Thai authors are affiliated with Thammasat University, including the corresponding author.
Limitations to consider
Only three cases with short follow-up were reported, so long-term safety, reproducibility and durability remain uncertain.