Evidence map›Paper›PMID 33407236›Full record

ArticleBMC medical imaging2021

Morphological study of the vastus medialis oblique in recurrent patellar dislocation based on magnetic resonance images.

Lei Shu, Xu Yang, Hangyuan He, Biao Chen, Liaobin Chen, Qubo Ni

Abstract read
In one paragraph

Article in BMC medical imaging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 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

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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

6 authors.

Lei ShuDepartment of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
Xu YangDepartment of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
Hangyuan HeDepartment of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
Biao ChenDepartment of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
Liaobin ChenDepartment of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China. lbchen@whu.edu.cn.
Qubo NiDepartment of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China. niqubo@znhospital.cn.

Funding

National Natural Science Foundation of China 81803275
6 · The paper itself

Abstract

backgroundTo investigate the morphological parameters of the vastus medialis obliquus (VMO) muscle and delineate its importance in the maintenance of patellofemoral joint stability.

methodsThe magnetic resonance imaging data of seventy-five knees (fifty-four patients) with recurrent lateral patella dislocation (LPD) and seventy-five knees (seventy patients) without recurrent LPD were retrospectively analysed. Five morphological parameters related to the VMO (elevation in the sagittal plane and coronal plane, craniocaudal extent, muscle-fibre angulation, cross-sectional area ratio) and two patella tilt parameters (patella tilt angle, bisect offset ratio) were measured in MR images. The independent-samples t test or chi-square test was used for statistical comparisons.

resultsThe mean ages of the patients in the recurrent LPD group and control group were 22.1 ± 9.9 years and 24.0 ± 6.5 years, respectively. Eighteen out of seventy-five (24%) patients MRI showed VMO injuries. Compared with the control group, the patients with recurrent LPD showed significantly higher sagittal VMO elevation (10.4 ± 2.3 mm vs. 4.1 ± 1.9 mm), coronal VMO elevation (15.9 ± 5.7 mm vs. 3.9 ± 3.7 mm), muscle-fibre angulation (35.4 ± 8.0° vs. 27.9 ± 6.3°), patella tilt angle (25.9 ± 10.7° vs. 9.1 ± 5.2°), and bisect offset ratio values (0.9 ± 0.3 vs. 0.5 ± 0.1) and significantly lower craniocaudal extent (13.7 ± 5.3 mm vs. 16.7 ± 5.1 mm) and cross-sectional area ratio values (0.05 ± 0.02 vs. 0.07 ± 0.02).

conclusionsThe results showed that abnormalities in the VMO and patella tilt were clearly present in recurrent LPD patients compared with normal people.

Indexed as

Magnetic Resonance ImagingAdolescentAdultAtrophyChildFemaleHumansMaleMiddle AgedPatellaPatellar DislocationQuadriceps MuscleRecurrenceRetrospective StudiesYoung AdultMagnetic resonance imagingMorphological parametersRecurrent lateral patellar dislocationVastus medialis obliquus

Identifiers

PMID33407236
PMCPMC7788929

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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.