Evidence map›Paper›PMID 34984499›Full record

ArticleInternational orthopaedics2022

Risk factors of dislocation after total hip arthroplasty in patients with developmental dysplasia of the hip.

Seyed Mohammad Javad Mortazavi, Ehsan Ghadimi, Mohammad Vahedian Ardakani, Mohammadreza Razzaghof, Mohammad Ali Ghasemi, Ali Nili, Ali Vafaei, Alireza Moharrami, Sheila Rasta

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Article in International orthopaedics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
–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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

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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

9 authors.

Seyed Mohammad Javad MortazaviJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran. smjmort@yahoo.com.
Ehsan GhadimiJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.
Mohammad Vahedian ArdakaniJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-5182-0557
Mohammadreza RazzaghofJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-7964-1163
Mohammad Ali GhasemiJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.
Ali NiliDepartment of Orthopedic Surgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
Ali VafaeiDepartment of Orthopedic Surgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
Alireza MoharramiJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.ORCID http://orcid.org/0000-0002-8457-8197
Sheila RastaJoint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDislocation following total hip arthroplasty (THA) is a well-known complication. However, there is little data on its rate and predictors in patients with developmental dysplasia of the hip (DDH). The current study is aimed to determine the rate and specific risk factors of dislocation following THA in DDH patients.

methodsAll the medico-surgical records of primary THAs from January 2014 to January 2019 were retrospectively reviewed. They were categorized into three main groups: primary OA, DDH, and others. Pre-operative and post-operative radiographs, past medical and surgical history, and surgical notes were reviewed in DDH cases.

resultsIn a total of 171 patients with DDH, 21 suffered from dislocation after THA (12%) which was significantly more frequent than those with primary OA. In univariate analysis, higher grade of dysplasia, smaller head size, intra-operative fracture, Wagner Cone stem, failure of offset restoration, and implanting the cup outside the Lewinnek's safe zone were identified as predictors of dislocation. In multiple regression analysis, however, only higher Crowe grade, intra-operative fracture, and post-operative acetabular offset less than 16 mm were independent predictors of dislocation.

conclusionDysplastic hips can be more prone to post-THA dislocation than those with primary OA. Higher grades of dysplasia, failure of offset restoration, and intra-operative fracture can increase the rate of dislocation in this group of patients.

Indexed as

Arthroplasty, Replacement, HipDevelopmental Dysplasia of the HipFractures, BoneHip DislocationHip Dislocation, CongenitalJoint DislocationsHumansIntraoperative ComplicationsRetrospective StudiesRisk FactorsDevelopmental dysplasia of the hipDislocationIntraoperative fractureOffsetTotal hip arthroplasty

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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.