Evidence map›Paper›PMID 37280558›Full record

ArticleBMC musculoskeletal disorders2023

Trajectory of bolt and length of plate in femoral neck system determine the stability of femur neck fracture and risk of subsequent subtrochanteric fracture : a finite element analysis.

Chang-Ho Jung, Yonghan Cha, Jun Young Chung, Chan Ho Park, Tae Young Kim, 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 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 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 3 institutions in 1 country.

Chang-Ho JungDepartment of Mechanical Engineering, Ajou University, Suwon, Korea.
Yonghan ChaDepartment of Orthopaedic Surgery, Eulji university hospital, Daejeon, Korea.
Jun Young ChungDepartment of Orthopaedic Surgery, Ajou University School of Medicine, Ajou Medical Center, 164, World cup-ro, Yeongtong-gu, Suwon, 16499, Korea.
Chan Ho ParkDepartment of Orthopaedic Surgery, New Daesung Hospital, Bucheon, Korea.
Tae Young KimDepartment of Orthopaedic Surgery, Ajou University School of Medicine, Ajou Medical Center, 164, World cup-ro, Yeongtong-gu, Suwon, 16499, Korea.
Jun-Il YooDepartment of Orthopedic Surgery, Inha University Hospital, Incheon, Korea.
Jung-Taek KimDepartment of Orthopaedic Surgery, Ajou University School of Medicine, Ajou Medical Center, 164, World cup-ro, Yeongtong-gu, Suwon, 16499, Korea. orthopedist7@ajou.ac.kr.
Yongho JeonDepartment of Mechanical Engineering, Ajou University, Suwon, Korea.
Ajou University · KRDaejeon Eulji Medical Center, Eulji University · KRInha University Hospital · KR

Funding

the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) 2022R1G1A1003299
6 · The paper itself

Abstract

backgroundThis study aimed to analyze the differences in the stability of fractures, stress distribution around the distal-most screw according to the length of the plate and the trajectory of the bolt in Pauwels type III femoral neck fracture using the femoral neck system (FNS).

methodsFinite element models of Pauwels type III femoral neck fractures were established with surgical variations in the trajectory of the bolt (central, inferior, valgus, and varus) and length of the lateral plate (1- and 2-hole plate). The models were subsequently subjected to normal walking and stair-climbing loads.

resultsThe screw-holding cortical bone in subtrochanter in the model with a 2-hole plate and the bolt in the inferior trajectory and the models with 1-hole or 2-hole plate and the bolt in valgus trajectory had shown greater maximum principal strain than the models with central or varus trajectories. The gap and sliding distance on the fracture surface were larger with inferior or varus trajectories of the bolt and smaller with the valgus trajectory of the bolt under both loads, compared to those of the central trajectory.

conclusionFor the fixation of Pauwels type III femoral neck fracture, the trajectory of the FNS bolt and the length of the plate affect the mechanical stability of the fracture and the strain of cortical bone around the distal-most screw. The surgical target should stay on the central trajectory of the bolt and the 2-hole plate's mechanical benefits did not exceed the risk.

Indexed as

Femoral Neck FracturesHip FracturesBiomechanical PhenomenaFemur NeckFinite Element AnalysisFracture Fixation, InternalHumansBolt trajectoryFemoral neck fracturesFixationPauwels type III

Identifiers

PMID37280558
PMCPMC10245606
OpenAlexW4379600525

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.