Evidence map›Paper›PMID 37344858›Full record

ArticleBMC musculoskeletal disorders2023

Pre-sliding of femoral neck system improves fixation stability in pauwels type III femoral neck fracture: a finite element analysis.

Yonghan Cha, Jun Young Chung, Chang-Ho Jung, Jin-Woo Kim, Jeyoon Lee, Jun-Il Yoo, Jung-Taek Kim, Yongho Jeon

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
4.1field-weighted citation impact, top 6% 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.

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3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 13 citations in OpenAlex.

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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

8 authors at 4 institutions in 1 country.

Yonghan Cha *Department of Orthopaedic Surgery, Eulji university hospital, Daejeon, Korea.
Jun Young Chung *Department of Orthopedic Surgery, Ajou University School of Medicine, Ajou Medical Center, 164, World cup-ro, Yeongtong-gu, 16499, Suwon, Suwon-si, Gyeonggi-do, Korea.
Chang-Ho JungDepartment of Mechanical Engineering, Ajou University, Suwon, Korea.
Jin-Woo KimDepartment of Orthopaedic Surgery, Nowon Eulji Medical Center, Eulji University, Seoul, Korea.
Jeyoon LeeDepartment of Orthopedic Surgery, Ajou University School of Medicine, Ajou Medical Center, 164, World cup-ro, Yeongtong-gu, 16499, Suwon, Suwon-si, Gyeonggi-do, Korea.
Jun-Il YooDepartment of Orthopedic Surgery, Inha University Hospital, Incheon, Korea.
Jung-Taek KimDepartment of Orthopedic Surgery, Ajou University School of Medicine, Ajou Medical Center, 164, World cup-ro, Yeongtong-gu, 16499, Suwon, Suwon-si, Gyeonggi-do, Korea. orthopedist7@ajou.ac.kr.
Yongho JeonDepartment of Mechanical Engineering, Ajou University, Suwon, Korea.
Ajou University · KREulji University · KRDaejeon Eulji Medical Center, Eulji University · KRInha University Hospital · KR

Funding

the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea HI20C2140the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea HI22C0494the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) 2022R1G1A1003299
6 · The paper itself

Abstract

backgroundFemoral neck fractures are a common injury in older adults and their management presents a significant challenge for orthopedic surgeons. The Femoral Neck System (FNS) was recently introduced for the fixation of femur neck fractures. Although neck shortening was reduced with the FNS, the complication rates were not reduced. Thus, improvements to enhance fixation stability should be made for the FNS. We hypothesized that (1) the pre-sliding technique and (2) the use of longer anti-rotation screw would increase fracture stability. This study aimed to determine the change in fracture stability using the pre-sliding technique and long anti-rotation screw in the FNS for fixation of Pauwels type III femoral neck fractures.

methodsFinite element models of Pauwels type III femoral neck fracture fixed with pre-sliding FNS and 5-mm longer anti-rotation screw were established. The models were subjected to normal walking load. The material properties of the elements belonging to the bone were mapped by assigning the formulation with the computed tomography Hounsfield unit.

resultsPauwels type III femoral neck fractures fixed with pre-slided FNS showed better fracture stability, decreasing fracture gap and sliding by 14% and 12%, respectively, under normal walking load. No element of cortical bone in any of the models had an absolute value of principal strain that exceeded 1%. The peak von Mises stress (VMS) of the implants ranged from 260 to 289 MPa, and the highest peak VMS value was 50% lower than the yield strength of the titanium alloy (800 MPa). The longer anti-rotation screw did not affect fracture stability.

conclusionsThe pre-sliding technique using the FNS showed higher fracture stability than the standard fixation technique for a Pauwels type III femoral neck fracture. The longer anti-rotation screw did not contribute significantly to fixation stability. As this finite element analysis considered the inhomogeneous mechanical property of the bone, it offered equivalent mechanical conditions to investigate the components of interest.

Indexed as

Femoral Neck FracturesFemur NeckFracture Fixation, InternalAgedBiomechanical PhenomenaBone ScrewsFinite Element AnalysisHumansAnti-rotation screwFemoral Neck SystemPauwels type III neck fracturePre-sliding technique

Identifiers

PMID37344858
PMCPMC10286416
OpenAlexW4381510396

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.