Evidence map›Paper›PMID 31018860›Full record

ArticleBiomedical engineering online2019

Biomechanical investigation of dynamic hip screw and wire fixation on an unstable intertrochanteric fracture.

Hsu-Fu Wu, Chih-Han Chang, Gwo-Jaw Wang, Kuo-An Lai, Chung-Hwan Chen

Open access · goldAbstract read
In one paragraph

Article in Biomedical engineering online, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 12% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

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  4. Comparison of the Dynamic Cut-Out Failure Modes of Common Proximal Femoral Fixation Devices Using a Mesh-Free Computational Method.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
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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 at 4 institutions in 2 countries.

Hsu-Fu WuDepartment of BioMedical Engineering, National Cheng Kung University, Tainan, Taiwan.
Chih-Han ChangDepartment of BioMedical Engineering, National Cheng Kung University, Tainan, Taiwan. changbmencku@gmail.com.
Gwo-Jaw WangDepartment of BioMedical Engineering, National Cheng Kung University, Tainan, Taiwan.
Kuo-An LaiDepartment of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan.
Chung-Hwan ChenOrthopaedic Research Center, Kaohsiung Medical University, No 100 Shih Chuan 1st road, SanMing district, Kaohsiung, Taiwan.
National Cheng Kung University · TWKaohsiung Medical University · TWNational Cheng Kung University Hospital · TWUniversity of Virginia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough use of a dynamic hip screw (DHS) for stable intertrochanteric hip fracture fixation has been successfully applied in fracture healing for more than 20 years, DHS fixation on unstable intertrochanteric fractures still has a high failure rate, especially in patients with osteoporosis. Although the wire fixation is usually incorporated with orthopedic device to treat fracture, the wiring techniques are developed through experiences. Thus, this study is objective to investigate the biomechanical property of different wire fixation methods incorporated with DHS system to provide the lesser trochanter fragment stable fixation on osteoporotic TypeA2.1 fracture for enhancing stability after bone reduction.

resultsSawbone testing results demonstrated higher maximum load, stiffness, and energy in a DHS with wire fixation compared with DHS fixation only. In static biomechanical testing of a cadaver femur, we compared the stiffness of five fixation models and then tested a fatigue failure model in cycle loading with DHS fixation only. Wiring fixation can enhance stability and the cut-out failure model in the fatigue test was identical to the clinical failure model.

conclusionsLesser trochanteric fragment fixation is a crucial concern in the stability of an A2.1 unstable fracture, and the combination of a wiring technique with a DHS seems beneficial for achieving better stability. The addition of an antirotational greater trochanter is likely to enhance stability through wiring of the greater trochanter.

Indexed as

Bone ScrewsMechanical PhenomenaAged, 80 and overBiomechanical PhenomenaFemaleFemurHip FracturesHumansMaterials TestingDynamic hip screwIntertrochanteric hip fractureLesser trochanteric fragmentUnstable typeWire

Identifiers

PMID31018860
PMCPMC6482576
OpenAlexW2947757634

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.