ArticleJournal of orthopaedic surgery and research2026
Pelvic tilt ratio correlates with distinct spinopelvic muscle patterns in adult spinal deformity with sagittal imbalance: a retrospective cohort study.
Article in Journal of orthopaedic surgery and research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
backgroundPelvic tilt ratio (PTr), defined as pelvic tilt divided by pelvic incidence, may provide an individualized measure of pelvic retroversion in adult spinal deformity (ASD). However, the spinopelvic muscle characteristics associated with different degrees of pelvic retroversion remain unclear. This study aimed to characterize radiographic, clinical, and spinopelvic muscle features stratified by PTr and to identify muscle parameters independently associated with pelvic retroversion in ASD patients with sagittal imbalance.
methodsNinety-nine surgically treated ASD patients with preoperative sagittal vertical axis > 50 mm and minimum 2 year follow-up were recruited. Radiographic parameters, patient-reported outcomes, and paraspinal and gluteal muscle parameters were compared across three groups by PTr. LASSO-retained muscle variables, adjusted for age, sex, and body mass index (BMI), were entered into a multivariable linear regression model for PTr.
resultsThe Large PTr group showed more severe sagittal malalignment, worse preoperative back pain, and greater postoperative radiographic correction. Higher PTr was associated with smaller cross-sectional areas in all three paraspinal muscles, higher erector spinae fat infiltration (ES FIR), and lower gluteus medius fat infiltration (Gmed FIR). LASSO retained multifidus total cross-sectional area (MF TCSA), ES FIR, and Gmed FIR for the final model. In multivariable linear regression, smaller MF TCSA (B = -3.305, P < 0.001), higher ES FIR (B = 0.458, P = 0.024), and lower Gmed FIR (B = -0.883, P = 0.003) were independently associated with greater PTr.
conclusionsIn ASD patients with sagittal imbalance, higher PTr was associated with more severe deformity, worse preoperative back pain, and a distinct spinopelvic muscle pattern. Smaller MF TCSA, greater ES FIR, and lower Gmed FIR were independently associated with greater PTr.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.