Evidence map›Paper›PMID 39506795›Full record

ArticleJournal of orthopaedic surgery and research2024

Initial construct stability of long cephalomedullary nails with superior locking for a complex trochanteric fracture model AO31A2.2- a biomechanical study.

Arndt-Peter Schulz, Matthias Münch, Tobias Barth, Birgitt Kowald, Jasper Frese, Lina Behrends, Maximilian Hartel

Abstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 5 pooled it
–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

30 citing papers in PubMed, 5 syntheses or guidelines pooled it.

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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

7 authors.

Arndt-Peter SchulzBG Klinikum Hamburg, Zentrum Klinische Forschung, Bergedorfer Strasse 10, 21033, Hamburg, Germany. schulz@biomechatronics.de.
Matthias MünchBG Klinikum Hamburg, Zentrum Klinische Forschung, Bergedorfer Strasse 10, 21033, Hamburg, Germany.
Tobias BarthBG Klinikum Hamburg, Zentrum Klinische Forschung, Bergedorfer Strasse 10, 21033, Hamburg, Germany.
Birgitt KowaldBG Klinikum Hamburg, Zentrum Klinische Forschung, Bergedorfer Strasse 10, 21033, Hamburg, Germany.
Jasper FreseBG Klinikum Hamburg, Zentrum Klinische Forschung, Bergedorfer Strasse 10, 21033, Hamburg, Germany.
Lina BehrendsFraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Mönkhofer Weg 239 a, 23562, Lübeck, Germany.
Maximilian HartelBG Klinikum Hamburg, Zentrum Klinische Forschung, Bergedorfer Strasse 10, 21033, Hamburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundComplex fractures of the trochanteric region, as well as fractures located in the directly subtrochanteric region, are controversially discussed around the world regarding the nail type to be used. A long nail is recommended by manufacturers but requires longer surgical and fluoroscopy times. A possible solution could be a nail with an appropriate length which can be locked in a minimally invasive manner by the main aiming device. We aimed to determine if such a nail model (DCN SL nail, SWEMAC, Linköping, Sweden) offers similar structural stability on biomechanical testing on artificial bone as a standard long nail when used to treat complex trochanteric fractures and compared it to long nails usually used in this setting.

methodsAn osteoporotic bone model was chosen. The Swemac Hansson DCN Nail System was used as osteosynthesis material. Two types of nails were chosen: a superior lock nail which can be implanted with a singular targeting device, and a long nail with distal locking using free-hand technique. AO31A2.2 fractures were simulated in a standardised manner. Axial height of the construct, varus collapse, and rotational deformity directly after nail insertion were simulated. A Universal Testing Machine was used. Measurements were made with a stereo-optic tracking system.

findingsThere was a detectable difference in the axial fracture movement resulting in narrowing of the fracture gap. There was no difference in varus collapse or rotational deformity between the nail variants

conclusionWe conclude that there are small differences which are clinically insignificant and that a superior locking nail can safely be used to manage complex trochanteric fractures.

Indexed as

Bone NailsFracture Fixation, IntramedullaryHip FracturesBiomechanical PhenomenaHumansAO31A2.2BiomechanicalBiomechanical studyCephalomedullary nailGamma nailGOMHansson nailLong nailSurrogate boneTrochanteric fracture

Identifiers

PMID39506795
PMCPMC11542236

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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.