Evidence map›Paper›PMID 35872129›Full record

ArticleWorld neurosurgery2022

A Risk Calculator for the Prediction of C5 Nerve Root Palsy After Instrumented Cervical Fusion.

Akash A Shah, Sai K Devana, Changhee Lee, Amador Bugarin, Michelle K Hong, Alexander Upfill-Brown, Gideon Blumstein, Elizabeth L Lord, Arya N Shamie, Mihaela van der Schaar and 2 more

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in World neurosurgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 22% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 3 institutions in 3 countries.

Akash A ShahDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA. Electronic address: aashah@mednet.ucla.edu.
Sai K DevanaDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Changhee LeeDepartment of Artificial Intelligence, Chung-Ang University, Seoul, South Korea.
Amador BugarinDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Michelle K HongDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Alexander Upfill-BrownDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Gideon BlumsteinDepartment of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA.
Elizabeth L LordDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Arya N ShamieDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Mihaela van der SchaarDepartment of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom; Department of Electrical & Computer Engineering, UCLA, Los Angeles, California, USA.
Nelson F SooHooDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Don Y ParkDepartment of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
University of California, Los Angeles · USChung-Ang University · KRRush University Medical Center · US

Funding

Regenerative Musculoskeletal Medicine Training ProgramT32AR059033 · NIAMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI John S Adams, Nicholas M. Bernthal · 2011 to 2026
$4.8M
NIAMS NIH HHS L30 AR081607NIAMS NIH HHS T32 AR059033
6 · The paper itself

Abstract

backgroundC5 palsy is a common postoperative complication after cervical fusion and is associated with increased health care costs and diminished quality of life. Accurate prediction of C5 palsy may allow for appropriate preoperative counseling and risk stratification. We primarily aim to develop an algorithm for the prediction of C5 palsy after instrumented cervical fusion and identify novel features for risk prediction. Additionally, we aim to build a risk calculator to provide the risk of C5 palsy.

methodsWe identified adult patients who underwent instrumented cervical fusion at a tertiary care medical center between 2013 and 2020. The primary outcome was postoperative C5 palsy. We developed ensemble machine learning, standard machine learning, and logistic regression models predicting the risk of C5 palsy-assessing discrimination and calibration. Additionally, a web-based risk calculator was built with the best-performing model.

resultsA total of 1024 patients were included, with 52 cases of C5 palsy. The ensemble model was well-calibrated and demonstrated excellent discrimination with an area under the receiver-operating characteristic curve of 0.773. The following features were the most important for ensemble model performance: diabetes mellitus, bipolar disorder, C5 or C4 level, surgical approach, preoperative non-motor neurologic symptoms, degenerative disease, number of fused levels, and age.

conclusionsWe report a risk calculator that generates patient-specific C5 palsy risk after instrumented cervical fusion. Individualized risk prediction for patients may facilitate improved preoperative patient counseling and risk stratification as well as potential intraoperative mitigating measures. This tool may also aid in addressing potentially modifiable risk factors such as diabetes and obesity.

Indexed as

LaminectomySpinal FusionAdultCervical VertebraeDecompression, SurgicalHumansParalysisPostoperative ComplicationsQuality of LifeRetrospective StudiesC5 palsyCervical fusionInstrumentationMachine learningRisk calculator

Identifiers

PMID35872129
PMCPMC10410645
OpenAlexW4286436486

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.