Evidence map›Paper›PMID 37684061›Full record

ArticleGlobal spine journal2025

How Does Spino-Pelvic Fixation Affect Post-Operative Compensatory Mechanisms in Adult Spinal Deformity?

Wang Zhi, Ghassan Boubez, Fidaa Al-Shakfa, Yousef Kamel, Jia Liu, Daniel Shedid, Sung Joo Yuh, Maroun Rizkallah

Open access · goldAbstract read
In one paragraph

Article in Global spine journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 24% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 1 synthesis or guideline pooled it, 3 citations in OpenAlex.

  1. Pooled it
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Wang ZhiDepartment of Orthopedic Surgery, University of Montreal Health Center, Montreal, QC, Canada.
Ghassan BoubezDepartment of Orthopedic Surgery, University of Montreal Health Center, Montreal, QC, Canada.
Fidaa Al-ShakfaDepartment of Orthopedic Surgery, University of Montreal Health Center, Montreal, QC, Canada.
Yousef KamelUniversity of Montreal, Montreal, QC, Canada.
Jia LiuUniversity of Montreal, Montreal, QC, Canada.
Daniel ShedidDepartment of Neurosurgery, University of Montreal Health Center, Montreal, QC, Canada.
Sung Joo YuhDepartment of Neurosurgery, University of Montreal Health Center, Montreal, QC, Canada.
Maroun RizkallahDepartment of Orthopedic Surgery, University of Montreal Health Center, Montreal, QC, Canada.ORCID 0000-0003-2592-7841
Université de Montréal · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designRetrospective single-center multi-surgeon cohort study.

objectivesCompare the post-operative changes in the compensatory mechanisms of the sagittal balance according to the type of pelvic fixation: S2-Alar-iliac screws (S2AI) vs iliac screws (IS) in patients with Adult spine deformity (ASD).

methodsASD patients who underwent spino-pelvic fixation and remained with a PI-LL >10° mismatch post-operatively were included. Pre-operative and 1-year-follow-up PI, Lumbar lordosis (LL), pelvic tilt (PT), sacral slope (SS), thoracic kyphosis (TK), femur obliquity angle (FOA), knee flexion angle (KFA) and ankle flexion angle (AFA) were analyzed on EOS imaging. Patients were categorized based on their pelvic fixation type (S2AI vs IS), and the pre-operative to 1-year-post-operative changes (ΔX°) in the compensatory mechanisms were compared between groups.

resultsPatients with S2AI (

conclusionThe type of pelvic fixation impacts significantly the post-operative compensatory mechanisms in patients with ASD. Patients with S2AI screws are more likely to compensate their remaining post-operative PI-LL mismatch through their knees and less likely through their pelvis compared to patients with IS, despite similar changes in PT. This could be explained by an increased SI joint laxity in ASD patient and the lower resistance of the iliac connectors to the junctional mechanical stresses, allowing for sacro-iliac joint motion in patients with IS.

Indexed as

adult spine deformityiliac screwslumbo-pelvic fixationmechanisms of compensationS2AI screws

Identifiers

PMID37684061
PMCPMC11877568
OpenAlexW4386531995

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

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.