Evidence map›Paper›PMID 40387941›Full record

ArticleArchives of orthopaedic and trauma surgery2025

Plate-augmented fixation of comminuted Letenneur type II Hoffa fractures provides favorable stability compared to isolated posteroanterior screw fixation - a biomechanical study.

Christian Peez, Moritz F Lodde, Ivan Zderic, R Geoff Richards, Ludmil Drenchev, Hristo K Skulev, Boyko Gueorguiev, Christoph Kittl, Michael J Raschke, Elmar Herbst

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed
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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Christian PeezDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany. christian.peez@ukmuenster.de.
Moritz F LoddeDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.
Ivan ZdericAO Research Institute, Davos, Switzerland.
R Geoff RichardsAO Research Institute, Davos, Switzerland.
Ludmil DrenchevBulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technology with Chydroaerodynamic Centre "Acad. A. Balevski", Sofia, Bulgaria.
Hristo K SkulevBulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technology with Chydroaerodynamic Centre "Acad. A. Balevski", Sofia, Bulgaria.
Boyko GueorguievAO Research Institute, Davos, Switzerland.
Christoph KittlDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.
Michael J RaschkeDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.
Elmar HerbstDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionCurrent literature lacks recommendations regarding proper fixation of comminuted coronal plane fractures of the posterior femoral condyles (Hoffa fractures). Therefore, the aim of this study was to compare the biomechanical characteristics of different plate-augmented constructs to isolated posteroanterior screw fixation in comminuted lateral Hoffa fractures. MATERIALS AND

methodsComminuted Letenneur type IIb lateral Hoffa fractures were simulated in 24 human cadaveric distal femora. The fractures were fixed with either isolated crossed posteroanterior screws or additionally with either a posterior plate, a lateral locking plate, or combined posterior and lateral locking plates. All specimens were biomechanically tested under progressively increasing cyclic loading until failure, while capturing the interfragmentary movements of the Hoffa and intercalary fragments via motion tracking.

resultsPlate-augmented posteroanterior screw fixation of the Hoffa fragment exhibited higher cycles to failure, higher failure loads (p < 0.05) and less axial displacements (p < 0.05) compared to isolated posteroanterior screw fixation. Both additional lateral locking and double plate fixations of the intercalary fragment provided higher cycles to failure, higher failure loads (p < 0.05) and less axial displacement (p < 0.05) than isolated posteroanterior screw fixation, whereas additional posterior plate fixation did not significantly increase cycles to failure, failure loads and axial displacement (n.s.). Fracture gap twisting and opening did not differ significantly between the four constructs for the Hoffa fragment, while plate-augmented constructs provided less fracture opening of the intercalary fragment compared to isolated posteroanterior screw fixation (p < 0.01).

conclusionsPlate-augmented posteroanterior screw fixation of comminuted Letenneur type IIb Hoffa fractures provided greater biomechanical stability than isolated posteroanterior screw fixation. While additional lateral or double plate fixation improves the stability of both the intercalary and Hoffa fragment, posterior plating stabilized only the Hoffa fragment.

Indexed as

Bone PlatesBone ScrewsFemoral FracturesFracture Fixation, InternalFractures, ComminutedAgedBiomechanical PhenomenaCadaverFemaleHumansMaleBiomechanical testingHoffa fractureLetenneur classificationMotion trackingPlate-augmented fixationPosteroanterior screw fixation

Identifiers

PMID40387941
PMCPMC12089159

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