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Evaluation of Indirect Decompression Effect After Extreme Lateral Lumbar Interbody Fusion Using Three-Dimensional
Huiwen Zhou1,2,3, Hanming Bian1,2, Yiming Zhang1,2
1Clinical School of Orthopedics, Tianjin Medical University, Tianjin, China.
Orthopaedic Surgery
|July 23, 2025
Summary
Three-dimensional (3D) volumetric analysis of extreme lateral interbody fusion (XLIF) shows significant spinal canal expansion. Greater volume changes correlate with improved clinical outcomes, indicating XLIF
Area of Science:
- Spinal surgery
- Radiology
- Biomechanical engineering
Background:
- Traditional 2D radiography may underestimate neural decompression after extreme lateral interbody fusion (XLIF).
- Assessing central canal and foraminal volumes in a single plane can lead to inaccurate estimations of decompression effectiveness.
Purpose of the Study:
- To evaluate radiographic changes after XLIF using 3D volumetric measurements.
- To investigate the impact of indirect decompression achieved through XLIF procedures.
Main Methods:
- Retrospective analysis of 44 patients undergoing XLIF.
- 3D reconstructions from preoperative and postoperative CT scans.
- Quantification of spinal canal volumetric change (ΔV) via 3D modeling.
Main Results:
- XLIF significantly increased spinal canal volume (mean ΔV = 1629.28 mm³).
- A significant positive correlation was observed between ΔV and clinical outcomes, including reduced leg pain and improved Oswestry Disability Index (ODI).
Conclusions:
- The 3D volumetric method accurately assesses XLIF outcomes and spinal canal decompression.
- Increased spinal canal volume (ΔV) after XLIF predicts greater clinical benefits.
- This methodology holds potential for evaluating other spinal surgical techniques.
