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Updated: Jan 9, 2026
Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
Published on: July 25, 2025
Progression of Sagittal Imbalance Predicts Worse Outcomes After Short-segment Lumbar Interbody Fusion: A
Yukitoshi Shimamura1, Masahiro Kanayama, Fumihiro Oha
1Spine Center, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan.
Study Design:
Retrospective cohort study.
Objective:
The purpose of this study was to investigate how the progression of sagittal imbalance after surgery affects clinical outcomes in short-segment lumbar interbody fusion.
Summary And Background Data:
There are no studies investigated whether the progression of sagittal imbalance after surgery affects clinical outcomes or not.
Methods:
A total of 578 patients who had undergone short-segment lumbar interbody fusion were reviewed. Postoperative progression of sagittal imbalance was defined as sagittal vertebral axis (SVA) at the final follow-up-postoperative SVA in the present study. Patients were divided into the nonprogression group (ΔSVA<50 mm) and the progression group (ΔSVA ≥50 mm). Spinopelvic parameters and visual analog scale (VAS), Oswestry Disability Index (ODI), Roland-Morris Disability Questionnaire (RDQ), and satisfaction rate were measured preoperatively and at the final follow-up.
Results:
The nonprogression group included 475 patients, and the progression group included 103 patients. There were significant differences between the 2 groups regarding VAS of low back pain (the nonprogression group vs. the progression group: 19.1 vs. 30.7), ODI (21.3% vs. 29.4%), RDQ (4.6 vs. 6.7), and satisfaction rate (77.7 vs. 63.4) at the final follow-up.
Conclusions:
The current large cohort study demonstrated that postoperative progression of sagittal imbalance after surgery affects the clinical outcomes in short-segment fusion.
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