Evidence map›Paper›PMID 36479825›Full record

ArticleOrthopaedic surgery2023

Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation?

Mingliang Chen, Eiji Takahashi, Ayumi Kaneuji, Yoshiyuki Tachi, Makoto Fukui, Yugo Orita, Toru Ichiseki, You Zhou, Norio Kawahara

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Orthopaedic surgery, 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
0.4field-weighted citation impact, top 35% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. 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

9 authors at 2 institutions in 2 countries.

Mingliang ChenDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.ORCID https://orcid.org/0000-0003-1191-3668
Eiji TakahashiDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
Ayumi KaneujiDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
Yoshiyuki TachiDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
Makoto FukuiDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
Yugo OritaDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
Toru IchisekiDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
You ZhouDepartment of Orthopaedics, Affiliated Renhe Hospital of China Three Gorges University, Yichang, China.
Norio KawaharaDepartment of Orthopaedic Surgery, Kanazawa Medical University, Uchinada, Japan.
Kanazawa Medical University · JPChina Three Gorges University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe dual mobility cup (DMC) is designed to extend the longevity of the prosthesis by improving stability, enhancing the range of motion, and decreasing impingement without increasing wear. We hypothesized that DMC would reduce the risk of dislocation in elderly patients. This study aimed to investigate the clinical and radiographic outcomes of DMC-total hip arthroplasty (THA) in elderly patients at high risk of dislocation.

methodsFrom June 2016 to March 2020, 94 patients with a mean age of 77.7 years (97 hips) who underwent a posterolateral approach for DMC-THA in our department were followed up for at least one year. Preoperative and postoperative pelvic tilt angles (PTA) and DMC orientation were prospectively collected for all patients. Intraoperative and postoperative complications were recorded. A parametric test was used for normal distribution, and a non-parametric test was used for non-normal distribution.

resultsAbduction and anteversion angles of the cup were 42.4 and 18.0° in the supine position immediately postoperative. The average PTA for patients in the supine and standing positions were 26.5 and 34.5°, respectively. When moving from the supine to the standing position, patients experienced a mean posterior pelvic tilt of 9°. No intraoperative acetabular-related complications were recorded. Postoperative complications included early infection in one patient (1.0%) and dislocation in one patient (1.0%).

conclusionOur study demonstrates that DMC-THA provides satisfactory short-term outcomes in elderly patients at a high risk of dislocation, regardless of the change in PTA resulting from postural transition.

Indexed as

Arthroplasty, Replacement, HipHip DislocationHip ProsthesisJoint DislocationsAcetabulumAgedHumansPostoperative ComplicationsPostureDislocationDual mobility cupPelvic tiltSupine positionTotal hip arthroplasty

Identifiers

PMID36479825
PMCPMC9891910
OpenAlexW4310952900

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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.