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Updated: May 1, 2026
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C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position
Published on: September 16, 2022
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An optimal disc height changes for successful indirect decompression with OLIF.
Jae-Young Hong1, Jaewan Soh2, Jiwon Park3
1Department of Orthopaedic Surgery, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Republic of Korea. osspine@korea.ac.kr.
Scientific Reports
|July 2, 2025
Summary
Oblique Lumbar Interbody Fusion (OLIF) effectively decompress lumbar spine stenosis, improving patient outcomes. Optimal results correlate with specific disc height changes, indicating successful indirect decompression for at least one year post-surgery.
Area of Science:
- Orthopedics and Spine Surgery
- Minimally Invasive Spine Procedures
- Degenerative Lumbar Spine Conditions
Background:
- Lumbar spine stenosis, characterized by canal and foraminal narrowing, significantly impacts patient mobility and quality of life.
- Oblique Lumbar Interbody Fusion (OLIF) is a minimally invasive technique aiming for indirect decompression through disc space restoration.
- Evaluating the efficacy and predictive factors of OLIF for lumbar stenosis is crucial for optimizing surgical strategies.
Purpose of the Study:
- To assess the efficacy of oblique lumbar interbody fusion (OLIF) in achieving indirect decompression for lumbar spine stenosis.
- To identify radiological factors associated with successful indirect decompression following OLIF surgery.
- To evaluate the durability of surgical outcomes and radiological changes up to one year post-operation.
Main Methods:
- Retrospective analysis of 63 patients undergoing OLIF for lumbar spine stenosis, involving 104 vertebral levels.
- Radiological assessment of disc height (anterior and posterior), lumbar lordosis, foraminal height, spinal canal area, and foraminal area.
- Correlation of radiological changes with clinical outcomes, including Visual Analog Scale (VAS) leg pain and Oswestry Disability Index (ODI).
Main Results:
- Significant increases in spinal canal cross-sectional area (CSA) and foraminal cross-sectional area (CSF) were observed post-surgery (p < 0.001).
- Foraminal height (FH) increased significantly and remained stable up to one year post-surgery (p < 0.0001), correlating with improved VAS leg scores and ODI (p < 0.05).
- Greater increases in anterior and posterior disc height were associated with improved FH and CSF, suggesting optimal indirect decompression with >3.0 mm PDH changes and avoiding over-distraction.
Conclusions:
- Oblique Lumbar Interbody Fusion (OLIF) provides satisfactory indirect decompression for lumbar spine stenosis, with sustained benefits for at least one year.
- Changes in disc height, particularly posterior disc height (PDH), are key indicators of successful indirect decompression and optimal surgical outcomes.
- Careful management of disc space distraction during OLIF is essential to maximize foraminal height restoration and clinical improvement.
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