Evidence map›Paper›PMID 36973727›Full record

ArticleJournal of orthopaedic surgery and research2023

Biomechanical evaluation of a healed acetabulum with internal fixators: finite element analysis.

Pengyun Duan, Xiaohong Ding, Min Xiong, Panfeng Wang, Shipeng Xu, Wei Du

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

Article in Journal of orthopaedic surgery and research, 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, top 94% of its field
1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 0 citations in OpenAlex.

  1. [Biomechanical study of lumbar vertebra during gait cycle in adolescent idiopathic scoliosis].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2025
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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

6 authors at 2 institutions in 1 country.

Pengyun DuanSchool of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, People's Republic of China.
Xiaohong DingSchool of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, People's Republic of China. dingxh@usst.edu.cn.
Min XiongSchool of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, People's Republic of China.
Panfeng WangDepartment of Orthopaedics, Changhai Hospital, Naval Medical University, Shanghai, People's Republic of China.
Shipeng XuSchool of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, People's Republic of China.
Wei DuSchool of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, People's Republic of China.
University of Shanghai for Science and Technology · CNSecond Military Medical University · CN

Funding

National Natural Science Foundation of China 51975380Natural Science Foundation of Shanghai 22ZR1442800
6 · The paper itself

Abstract

backgroundTreatment of complicated acetabular fracture with internal fixation usually has high risk of failure because of unbefitting fixation. However, evaluation of the biomechanical effect of internal fixation under physiological loading for fracture healing is still generally rarely performed. The purpose of this study is to analyze the biomechanical characteristics of a healed acetabulum with designed internal fixators under gait and to explore the biomechanical relationship between the healed bone and the internal fixator.

methodsA patient-specific finite element model of whole pelvis with designed internal fixators was constructed based on the tomographic digital images, in which the spring element was used to simulate the main ligaments of the pelvis. And the finite element analysis under both the combination loading of different phases and the individual loading of each phase during the gait cycle was carried out. The displacement, von Mises stress, and strain energy of both the healed bone and the fixation were calculated to evaluate the biomechanical characteristics of the healed pelvis.

resultsUnder the combination loading of gait, the maximum difference of displacement between the left hip bone with serious injury and the right hip bone with minor injury is 0.122 mm, and the maximum stress of the left and right hemi-pelvis is 115.5 MPa and 124.28 MPa, respectively. Moreover, the differences of average stress between the bone and internal fixators are in the range of 2.3-13.7 MPa. During the eight phases of gait, the stress distribution of the left and right hip bone is similar. Meanwhile, based on the acetabular three-column theory, the strain energy ratio of the central column is relatively large in stance phases, while the anterior column and posterior column of the acetabular three-column increase in swing phases.

conclusionsThe acetabular internal fixators designed by according to the anatomical feature of the acetabulum are integrated into the normal physiological stress conduction of the pelvis. The design and placement of the acetabular internal fixation conforming to the biomechanical characteristics of the bone is beneficial to the anatomical reduction and effective fixation of the fracture, especially for complex acetabular fracture.

Indexed as

Fractures, BoneHip FracturesSpinal FracturesAcetabulumBiomechanical PhenomenaBone PlatesBone ScrewsFinite Element AnalysisFracture Fixation, InternalHumansAcetabulumFinite element analysisHealed pelvisInternal fixationThree-column theory

Identifiers

PMID36973727
PMCPMC10044380
OpenAlexW4361018306

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Textfull text, public
LicenceCC BY
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Registered trials

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