Evidence map›Paper›PMID 29922446›Full record

ArticleBone & joint research2018

Comparison of the stability of three fixation techniques between porous metal acetabular components and augments.

N A Beckmann, R G Bitsch, M Gondan, M Schonhoff, S Jaeger

Abstract read
In one paragraph

Article in Bone & joint research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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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

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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

21 citing papers in PubMed.

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  8. Acetabular Wall Weakening in Total Hip Arthroplasty: A Pilot Study.Pathophysiology : the official journal of the International Society for Pathophysiology · 2023
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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

5 authors.

N A BeckmannOncologic Orthopaedics and Septic Orthopaedic Surgery, Heidelberg University Hospital, Heidelberg, Germany.
R G BitschClinical Coordinator of Laboratory of Biomechanics and Implant Research, Heidelberg University Hospital, Heidelberg, Germany.
M GondanFaculty of Psychology, University of Vienna, Vienna, Austria.
M SchonhoffLaboratory of Biomechanics and Implant Research, Heidelberg University Hospital, Heidelberg, Germany.
S JaegerLaboratory of Biomechanics and Implant Research, Clinic for Orthopaedics and Trauma Surgery, Heidelberg University Hospital, Heidelberg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesIn order to address acetabular defects, porous metal revision acetabular components and augments have been developed, which require fixation to each other. The fixation technique that results in the smallest relative movement between the components, as well as its influence on the primary stability with the host bone, have not previously been determined.

methodsA total of 18 composite hemipelvises with a Paprosky IIB defect were implanted using a porous titanium 56 mm multihole acetabular component and 1 cm augment. Each acetabular component and augment was affixed to the bone using two screws, while the method of fixation between the acetabular component and augment varied for the three groups of six hemipelvises: group S, screw fixation only; group SC, screw plus cement fixation; group C, cement fixation only. The implanted hemipelvises were cyclically loaded to three different loading maxima (0.5 kN, 0.9 kN, and 1.8 kN).

resultsScrew fixation alone resulted in up to three times more movement (p = 0.006), especially when load was increased to 100% (p < 0.001), than with the other two fixation methods (C and SC). No significant difference was noted when a screw was added to the cement fixation. Increased load resulted in increased relative movement between the interfaces in all fixation methods (p < 0.001).

conclusionCement fixation between a porous titanium acetabular component and augment is associated with less relative movement than screw fixation alone for all implant interfaces, particularly with increasing loads. Adding a screw to the cement fixation did not offer any significant advantage. These results also show that the stability of the tested acetabular component/augment interface affects the stability of the construct that is affixed to the bone.

Indexed as

Acetabular revisionHip arthroplastyPorous metalPrimary stabilityRevision hip arthroplasty

Identifiers

PMID29922446
PMCPMC5987680

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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.