Evidence map›Paper›PMID 33101965›Full record

ArticleJournal of orthopaedic translation2020

Periprosthetic fracture fixation in Vancouver B1 femoral shaft fractures: A biomechanical study comparing two plate systems.

Dirk Wähnert, Marcus Müller, Hendrik Tiedemann, Sven Märdian, Michael J Raschke, Clemens Kösters

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic translation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. LOQTEQJournal of clinical medicine · 2022
    Article
  8. Article
  9. 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

6 authors at 4 institutions in 1 country.

Dirk WähnertProtestant Hospital of Bethel Foundation, Department of Trauma and Orthopaedic Surgery, Burgsteig 13, Building Gilead I, 33617, Bielefeld, Germany.
Marcus MüllerWestfaelische-Wilhelms-University Muenster, Institute for Musculoskeletal Medicine, Albert-Schweitzer-Campus 1, Building D3, 48149, Muenster, Germany.
Hendrik TiedemannSt. Franziskus Hospital Muenster, Department of Trauma Surgery, Hohenzollernring 70, 48145, Muenster, Germany.
Sven MärdianCharité - University Medicine Berlin, Center for Musculoskeletal Surgery, Augustenburger Platz 1, 13353, Berlin, Germany.
Michael J RaschkeUniversity Hospital Muenster, Department of Trauma, Hand and Reconstructive Surgery, Albert-Schweitzer-Campus 1, Building W1 48149, Muenster, Germany.
Clemens KöstersMaria-Josef-Hospital Greven, Department of Trauma and Orthopaedic Surgery Lindenstraße, 2948268, Greven, Germany.
University of Münster · DECharité - Universitätsmedizin Berlin · DESt. Franziskus Hospital · DEUniversity Hospital Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPeriprosthetic fractures of the femur are an increasing problem in today's trauma and orthopaedic surgery. Owing to the hip stem, implant anchorage is very difficult in the proximal femur. This study compares two plate systems regarding their biomechanical properties and the handling in periprosthetic fracture fixation of the proximal femur. MATERIALS AND

methodsUsing eight pairs of fresh, frozen human proximal femora the Locking Compression Plate/Locking Attachment Plate construct (LCP/LAP) (group I, DePuy Synthes) was compared to the new LOQTEQ® periprosthetic distal lateral femur plate (group II, AAP Implantate AG). After implantation of press fit femoral hip stems a Vancouver B1 fracture model was used. Biomechanical testing was performed by cyclic axial loading with a constant increment of 0.1 N/cycle starting from 750 N axial loading. Every 250 cycles an a.p. x-ray was done to evaluate failure.

resultsThe Group II showed significant higher axial stiffness (+42%) compared with Group I. In addition, Group II withstood significantly more load-cycles until failure (20%). The mode of catastrophic failure was plate breakage in Group II, whereas, in Group I, all plates showed an early bending followed by plate breakage. DISCUSSION AND

conclusionBoth plate systems enable screw placement around hip stems. The hinge plate showed superior biomechanical results compared with the locking compression plate/locking attachment plate construct. Furthermore, the hinge plate offers variable hinges and variable angel locking making bicortical screw placement around hip stems more comfortable and safe. THE TRANSLATIONAL POTENTIAL OF THIS ARTICLE: The results of this study can be directly transferred to patient care. With the innovative hinge plate, the surgeon has a biomechanically superior implant, which also offers improved options for screw placement compared to a standard locking plate.

Indexed as

Angular stable platingBiomechanical studyPeriprosthetic femoral fractures

Identifiers

PMID33101965
PMCPMC7548384
OpenAlexW3004479972

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.