Evidence map›Paper›PMID 33827523›Full record

ArticleBMC musculoskeletal disorders2021

Metacarpal shaft fixation: a biomechanical comparison of dorsal plating, lag screws, and headless compression screws.

Felix G E Dyrna, Daniel M Avery, Ryu Yoshida, David Lam, Simon Oeckenpöhler, Mark P Cote, Elifho Obopilwe, Craig M Rodner, Augustus D Mazzocca

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2021. 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
4.2field-weighted citation impact, top 5% 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

12 citing papers in PubMed, 27 citations in OpenAlex.

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  4. Biomechanical Characterization of Metacarpal Fixation: Internal Load Determination and Evaluation of a Novel Adhesive Osteosynthesis.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
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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

9 authors at 2 institutions in 2 countries.

Felix G E DyrnaDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Albert-Schweitzer-Campus 1, Building W1, 48149, Münster, Germany. felix.dyrna@icloud.com.ORCID http://orcid.org/0000-0003-2078-2241
Daniel M AveryOrthoSports Associates Upper Extremity Surgeon, Birmingham, AL, USA.
Ryu YoshidaDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
David LamDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
Simon OeckenpöhlerDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Albert-Schweitzer-Campus 1, Building W1, 48149, Münster, Germany.
Mark P CoteDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
Elifho ObopilweDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
Craig M RodnerDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
Augustus D MazzoccaDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA.
University of Connecticut · USUniversity Hospital Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMetacarpal shaft fractures are common and can be treated nonoperatively. Shortening, angulation, and rotational deformity are indications for surgical treatment. Various forms of treatment with advantages and disadvantages have been documented. The purpose of the study was to determine the stability of fracture fixation with intramedullary headless compression screws in two types of metacarpal shaft fractures and compare them to other common forms of rigid fixation: dorsal plating and lag screw fixation. It was hypothesized that headless compression screws would demonstrate a biomechanical stronger construct.

methodsFive matched paired hands (age 60.9 ± 4.6 years), utilizing non-thumb metacarpals, were used for comparative fixation in two fracture types created by an osteotomy. In transverse diaphyseal fractures, fixation by headless compression screws (n = 7) and plating (n = 8) were compared. In long oblique diaphyseal fractures, headless compression screws (n = 8) were compared with plating (n = 8) and lag screws (n = 7). Testing was performed using an MTS frame producing an apex dorsal, three point bending force. Peak load to failure and stiffness were calculated from the load-displacement curve generated.

resultsFor transverse fractures, headless compression screws had a significantly higher stiffness and peak load to failure, means 249.4 N/mm and 584.8 N, than plates, means 129.02 N/mm and 303.9 N (both p < 0.001). For long oblique fractures, stiffness and peak load to failure for headless compression screws were means 209 N/mm and 758.4 N, for plates 258.7 N/mm and 518.5 N, and for lag screws 172.18 N/mm and 234.11 N. There was significance in peak load to failure for headless compression screws vs plates (p = 0.023), headless compression screws vs lag screws (p < 0.001), and plates vs lag screws (p = 0.009). There was no significant difference in stiffness between groups.

conclusionIntramedullary fixation of diaphyseal metacarpal fractures with a headless compression screw provides excellent biomechanical stability. Coupled with lower risks for adverse effects, headless compression screws may be a preferable option for those requiring rapid return to sport or work. LEVEL OF EVIDENCE: Basic Science Study, Biomechanics.

Indexed as

Fractures, BoneMetacarpal BonesAgedBiomechanical PhenomenaBone ScrewsFracture Fixation, InternalHumansMiddle AgedBiomechanicsHeadless compression screwIntramedullary screw fixationMetacarpal fracture

Identifiers

PMID33827523
PMCPMC8025362
OpenAlexW3144809769

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.