Evidence map›Paper›PMID 29848122›Full record

ArticleThe Journal of international medical research2018

Impact of tip-apex distance and femoral head lag screw position on treatment outcomes of unstable intertrochanteric fractures using cephalomedullary nails.

Cheng-Hung Lee, Kuo-Chih Su, Kun-Hui Chen, Chien-Chou Pan, Yun-Che Wu

Abstract read
In one paragraph

Article in The Journal of international medical research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

12 citing papers in PubMed.

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  10. [Reasons of the guide pin eccentricity of helical blade during proximal femoral nail anti-rotation internal fixation for femoral intertrochanteric fractures].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021
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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

5 authors.

Cheng-Hung Lee1 Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.
Kuo-Chih Su3 Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan.
Kun-Hui Chen1 Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.
Chien-Chou Pan1 Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.
Yun-Che Wu1 Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background Cephalomedullary nails are frequently used in unstable intertrochanteric fractures. The implant position is an important factor for surgical success. Thus, in the present study, finite element analysis methods were used to investigate the biomechanical behavior of five different cephalomedullary nail positions in unstable intertrochanteric fractures. Methods Five different cephalomedullary nail implant positions were investigated. The observed indicators were the maximum displacement of the lag screw, the stress on the intertrochanteric fracture with involvement of the posteromedial cortex, and the tip-apex distance. Results The smallest lag screw displacement was achieved when the implant was closer to the inferior femoral head. Lower stress was placed on the posteromedial cortex when the implant was positioned closer to the inferior femoral head. However, the tip-apex distance increased when the lag screw was positioned more inferiorly. Conclusions The results of this study suggest that positioning the lag screw closer to the inferior aspect of the femoral head can reduce stress on the posteromedial cortex and deformation of the implant in unstable intertrochanteric fractures. These findings provide a biomechanical basis for selection of the cephalomedullary nail implantation site. Level of evidence III.

Indexed as

Biomechanical PhenomenaBone NailsBone ScrewsComputer SimulationFemur HeadFinite Element AnalysisFracture Fixation, IntramedullaryHip FracturesHumansModels, AnatomicTreatment OutcomeBiomechanicscephalomedullary nailfinite element analysislag screwtip–apex distanceunstable intertrochanteric fracture

Identifiers

PMID29848122
PMCPMC6023058

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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.