Evidence map›Paper›PMID 35192407›Full record

ArticleGlobal spine journal2023

Supine and Dynamic Extension Radiographs as the Strongest Predictors of Post-operative Alignment in Minimally Invasive Lumbar Spine Surgery.

Lauren A Barber, Renaud Lafage, Hamna Muzammil, Daniel J Shinn, Jeong H Kim, Virginie Lafage, Sravisht Iyer

Abstract read
In one paragraph

Article in Global spine journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

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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

1 citing paper in PubMed.

  1. Review
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

7 authors.

Lauren A BarberOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.ORCID 0000-0002-6772-8392
Renaud LafageOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.
Hamna MuzammilOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.
Daniel J ShinnOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.
Jeong H KimOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.
Virginie LafageOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.
Sravisht IyerOrthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designInstitutional review board-approved retrospective cohort study.

objectivesFailure to achieve alignment goals may result in accelerated adjacent segment degeneration and poorer outcomes. In "open" spine surgery, intraoperative tools can fine tune alignment; minimally invasive spine surgery techniques may not allow for this type of intraoperative adjustment. The aim of this study was to identify pre-operative radiographic parameters that accurately predict post-operative alignment after minimally invasive lumbar spine surgery. We hypothesized that pre-operative supine and extension sagittal alignment would predict post-operative standing alignment.

methods50 consecutive patients underwent lateral or anterior lumbar interbody fusion with or without percutaneous posterior instrumentation by a single-surgeon. Sagittal alignment parameters were evaluated on pre-operative standing scoliosis radiographs, dynamic radiographs, supine CT scout, and 6-week post-operative standing radiographs. Demographic and perioperative data were analyzed.

resultsThe mean age was 67.8 years. The mean BMI was 29.7. On average, 3 levels were instrumented (range, 2-6). Surgical time was 4.5 ± 1.8 hours. Following surgery, global lordosis increased from 44.7 ± 17° to 48.6 ± 16° (

conclusionsOur results suggest that pre-operative supine and extension radiographs could be a gold standard for minimally invasive lumbar spine surgery alignment correction as they predict post-operative alignment. The extension alignment was the strongest predictor of post-operative alignment.

Identifiers

PMID35192407
PMCPMC10538306

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