ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2026
Disparity between early radiographic decompression and one-year patient satisfaction after single-level LLIF: proposal of the structural improvement score (SIS) and QOL improvement score (QIS).
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Long-term impact of gastrointestinal risk stratification management on perioperative digestive complications in elderly osteoporotic vertebral fracture patients: a 10-year interrupted time series study.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026Article
- Mid-term effects of posterior versus oblique lumbar interbody fusion on spinopelvic alignment and clinical outcomes in lumbar spinal stenosis: a retrospective comparative cohort study.Journal of orthopaedic surgery and research · 2026Article
- Local fragility index and Radiomics-lite modeling of CT-Derived Hounsfield units for osteoporosis risk assessment in spine surgery patients.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026Article
- Osteoporosis prediction using lumbar CT Hounsfield units: comparative performance and clinical implications of seven machine learning models.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026Article
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Abstract
STUDY
designRetrospective cohort study. PURPOSE: To develop and internally assess two exploratory composite measures-the Structural Improvement Score (SIS) and the QOL Improvement Score (QIS)-that integrate early postoperative radiographic changes and multidomain patient-reported outcomes after single-level lateral lumbar interbody fusion (LLIF).
methodsA total of 101 patients who underwent single-level LLIF were retrospectively analyzed. Morphologic changes in the spinal canal were quantified using the change in midsagittal canal diameter (ΔCD) and central canal area (ΔCCA) on MRI, which were standardized to the Z-score and summed to define the SIS. Functional improvement was evaluated using the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ), and Z-standardized changes across five domains were aggregated to compute the QIS. Associations between SIS, QIS, postoperative satisfaction, and low back pain improvement (ΔNRS
resultsSIS demonstrated strong correlations with ΔCD (r = 0.864, p < 0.001) and ΔCCA (r = 0.849, p < 0.001), confirming its structural measurement validity, but showed no significant association with satisfaction (p = 0.197) or ΔNRS
conclusionsSIS and QIS provide complementary information on structural and functional recovery after LLIF. QIS demonstrated a moderate association with satisfaction, whereas residual pain remained the dominant determinant. These indices should be considered exploratory and require external validation, psychometric testing, and prospective multicenter studies before routine clinical use.
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