Evidence map›Paper›PMID 41940977›Full record

ArticleArchives of orthopaedic and trauma surgery2026

Biomechanical comparison of palmar plate plus headless compression screw versus radiopalmar double plating in AO/OTA 23-C2.1 distal radius fractures.

Patrick Riegner, Christian Spiegel, Felix Christian Kohler, Heike Kielstein, Ivan Zderic, Boyko Gueorguiev-Rüegg, Mark Lenz, Wolfram Weschenfelder

Abstract readComparative Study
In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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.

Patrick RiegnerJena University Hospital, Jena, Germany.
Christian SpiegelJena University Hospital, Jena, Germany.
Felix Christian KohlerJena University Hospital, Jena, Germany.
Heike KielsteinUniversity Hospital Halle, Halle (Saale), Germany.
Ivan ZdericAO Research Institute Davos, Davos, Switzerland.
Boyko Gueorguiev-RüeggAO Research Institute Davos, Davos, Switzerland.
Mark LenzJena University Hospital, Jena, Germany.
Wolfram WeschenfelderJena University Hospital, Jena, Germany. wolfram.weschenfelder@med.uni-jena.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThis biomechanical study compared the fracture stability of a palmar plate combined with a headless compression screw (HCS) with that of a radiopalmar double-plate construct for AO/OTA 23-C2.1 distal radius fractures with metaphyseal defect zones. MATERIALS AND

methodsEleven matched pairs of cryopreserved human radii were prepared with standardized AO/OTA 23-C2.1 fractures. Left radii (n = 11) were fixed with a palmar plate plus HCS, while right radii (n = 11) received a radiopalmar double-plate construct. Construct stiffness and axial displacement were assessed using a universal testing machine. Interfragmentary range of motion (ROM) and rotation (ROT) were quantified using an optical three-dimensional motion-tracking system. Measurements were obtained before and after 5000 cycles of dynamic axial loading at 150 N. Two specimen pairs were excluded due to early failure or incomplete data acquisition.

resultsBoth constructs demonstrated comparable stiffness and axial displacement, with no implant loosening or hardware failure observed. Interfragmentary ROM did not differ significantly between groups. However, the plate–HCS construct showed greater variability in rotational parameters. Initial radial-shaft rotation was significantly greater in the plate–HCS group (1.14° vs. 0.51°, p = 0.02). After cyclic loading, ulnar-shaft rotation increased significantly in the plate–HCS group (0.97° to 1.16°, p = 0.02) but not in the double-plate group.

conclusionIn this cadaveric model, fixation with a palmar plate combined with an HCS provided comparable axial stability but demonstrated greater variability and less consistent rotational control compared with radiopalmar double plating. Clinical studies are required to determine whether this less invasive construct achieves equivalent outcomes in vivo.

Indexed as

Bone PlatesBone ScrewsFracture Fixation, InternalPalmar PlateRadius FracturesWrist FracturesBiomechanical PhenomenaCadaverFemaleHumansMaleRange of Motion, ArticularDistal radius fractureHeadless compression screwPalmar locking plateRadio-palmar double plating

Identifiers

PMID41940977
PMCPMC13053438

What Socratic 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 Socratic graph.