Evidence map›Paper›PMID 34341898›Full record

ArticleAnnals of biomedical engineering2021

Elastic, Dynamic Viscoelastic and Model-Derived Fibril-Reinforced Poroelastic Mechanical Properties of Normal and Osteoarthritic Human Femoral Condyle Cartilage.

Mohammadhossein Ebrahimi, Mikko A J Finnilä, Aleksandra Turkiewicz, Martin Englund, Simo Saarakkala, Rami K Korhonen, Petri Tanska

Open access · hybridAbstract read
In one paragraph

Article in Annals of biomedical engineering, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

13 citing papers in PubMed, 30 citations in OpenAlex.

  1. Cationic Tantalum Oxide Nanoparticle and Neutral Iodixanol Contrast Agents Alter Cartilage Mechanical Properties.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
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  5. Depth-Wise Changes in Tibial and Femoral Human Knee Joint Cartilage at Different Severities of Osteoarthritis.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
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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

7 authors at 3 institutions in 2 countries.

Mohammadhossein EbrahimiDepartment of Applied Physics, University of Eastern Finland, POB 1627, 70211, Kuopio, Finland. mohammadhossein.ebrahimi@uef.fi.ORCID http://orcid.org/0000-0002-5480-7550
Mikko A J FinniläResearch Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.ORCID http://orcid.org/0000-0002-3348-5759
Aleksandra TurkiewiczClinical Epidemiology Unit, Department of Clinical Sciences Lund, Orthopaedics, Faculty of Medicine, Lund University, Lund, Sweden.
Martin EnglundClinical Epidemiology Unit, Department of Clinical Sciences Lund, Orthopaedics, Faculty of Medicine, Lund University, Lund, Sweden.
Simo SaarakkalaResearch Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.
Rami K KorhonenDepartment of Applied Physics, University of Eastern Finland, POB 1627, 70211, Kuopio, Finland.
Petri TanskaDepartment of Applied Physics, University of Eastern Finland, POB 1627, 70211, Kuopio, Finland.ORCID http://orcid.org/0000-0002-9684-6902
University of Eastern Finland · FILund University · SEUniversity of Oulu · FI

Funding

Academy of Finland 268378Academy of Finland 286526Academy of Finland 324529alfred kordelinin säätiö 190317Alfred Kordelinin Säätiö 190111Emil Aaltosen Säätiö 200016Suomen Kulttuurirahasto 191044Suomen Kulttuurirahasto 65191841
6 · The paper itself

Abstract

Osteoarthritis (OA) degrades articular cartilage and weakens its function. Modern fibril-reinforced poroelastic (FRPE) computational models can distinguish the mechanical properties of main cartilage constituents, namely collagen, proteoglycans, and fluid, thus, they can precisely characterize the complex mechanical behavior of the tissue. However, these properties are not known for human femoral condyle cartilage. Therefore, we aimed to characterize them from human subjects undergoing knee replacement and from deceased donors without known OA. Multi-step stress-relaxation measurements coupled with sample-specific finite element analyses were conducted to obtain the FRPE material properties. Samples were graded using OARSI scoring to determine the severity of histopathological cartilage degradation. The results suggest that alterations in the FRPE properties are not evident in the moderate stages of cartilage degradation (OARSI 2-3) as compared with normal tissue (OARSI 0-1). Drastic deterioration of the FRPE properties was observed in severely degraded cartilage (OARSI 4). We also found that the FRPE properties of femoral condyle cartilage related to the collagen network (initial fibril-network modulus) and proteoglycan matrix (non-fibrillar matrix modulus) were greater compared to tibial and patellar cartilage in OA. These findings may inform cartilage tissue-engineering efforts and help to improve the accuracy of cartilage representations in computational knee joint models.

Indexed as

Arthroplasty, Replacement, KneeBiomechanical PhenomenaCartilage, ArticularCollagenElasticityFemurFinite Element AnalysisHumansModels, BiologicalOsteoarthritisPorosityViscosityCollagenArticular cartilageFinite element analysisMechanical propertiesMechanical testingOARSI gradingOsteoarthritis

Identifiers

PMID34341898
PMCPMC8455392
OpenAlexW3188184221

What OpenQuestion holds

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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 OpenQuestion graph.