Evidence map›Paper›PMID 29848355›Full record

ArticleArthritis research & therapy2018

Calcification of the acetabular labrum of the hip: prevalence in the general population and relation to hip articular cartilage and fibrocartilage degeneration.

Thelonius Hawellek, Jan Hubert, Sandra Hischke, Matthias Krause, Jessica Bertrand, Burkhard C Schmidt, Andreas Kronz, Klaus Püschel, Wolfgang Rüther, Andreas Niemeier

Open access · goldAbstract read
In one paragraph

Article in Arthritis research & therapy, 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
3.6field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 38 citations in OpenAlex.

  1. Review
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  10. Chondrocalcinosis and Osteoarthritis: A Literature Review.European journal of rheumatology · 2023
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  11. Article
  12. Review
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  15. Autophagic LC3Science advances · 2022
    Article
  16. Article
  17. Graft Options in Hip Labral Reconstruction.Current reviews in musculoskeletal medicine · 2021
    Review
  18. Article
  19. Article
  20. 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

10 authors at 4 institutions in 1 country.

Thelonius HawellekDepartment of Orthopaedics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany. thelonius.hawellek@med.uni-goettingen.de.
Jan HubertDepartment of Orthopaedics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
Sandra HischkeDepartment of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Matthias KrauseDepartment of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Jessica BertrandDepartment of Orthopaedic Surgery, Otto-von-Guerricke-University Magdeburg, Magdeburg, Germany.
Burkhard C SchmidtCentrum of Geoscience, Georg-August-University Göttingen, Göttingen, Germany.
Andreas KronzCentrum of Geoscience, Georg-August-University Göttingen, Göttingen, Germany.
Klaus PüschelDepartment of Legal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Wolfgang RütherDepartment of Orthopaedics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
Andreas NiemeierDepartment of Orthopaedics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany. niemeier@uke.uni-hamburg.de.
University Medical Center Hamburg-Eppendorf · DEUniversität Hamburg · DEUniversity of Göttingen · DEOtto-von-Guericke University Magdeburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMeniscal calcification is considered to play a relevant role in the pathogenesis of osteoarthritis of the knee. Little is known about the biology of acetabular labral disease and its importance in hip pathology. Here, we analyze for the first time the calcification of the acetabular labrum of the hip (ALH) and its relation to hip cartilage degeneration.

methodsIn this cross-sectional post-mortem study of an unselected sample of the general population, 170 ALH specimens and 170 femoral heads from 85 donors (38 female, 47 male; mean age 62.1 years) were analyzed by high-resolution digital contact radiography (DCR) and histological degeneration grade. The medial menisci (MM) from the same 85 donors served as an intra-individual reference for cartilage calcification (CC). Scanning electron microscopy (SEM), energy dispersive analysis (ED) and Raman spectroscopy were performed for characterization of ALH CC.

resultsThe prevalence of CC in the ALH was 100% and that in the articular cartilage of the hip (ACH) was 96.5%. Quantitative analysis revealed that the amount of ALH CC was higher than that in the ACH (factor 3.0, p < 0.001) and in the MM (factor 1.3, p < 0.001). There was significant correlation between the amount of CC in the fibrocartilage of the left and right ALH (r = 0.70, p < 0.001). Independent of age, the amount of ALH CC correlated with histological degeneration of the ALH (Krenn score) (r = 0.55; p < 0.001) and the ACH (Osteoarthritis Research Society International (OARSI), r = 0.69; p < 0.001). Calcification of the ALH was characterized as calcium pyrophosphate dihydrate deposition.

conclusionThe finding that ALH fibrocartilage is a strongly calcifying tissue is unexpected and novel. The fact that ALH calcification correlates with cartilage degeneration independent of age is suggestive of an important role of ALH calcification in osteoarthritis of the hip and renders it a potential target for the prevention and treatment of hip joint degeneration.

Indexed as

AcetabulumAdultAgedAged, 80 and overCalcinosisCartilage, ArticularCartilage DiseasesCross-Sectional StudiesFemaleHumansMaleMiddle AgedOsteoarthritis, HipAcetabular labrumCartilage calcificationChondrocalcinosisCPPDHipOsteoarthritis

Identifiers

PMID29848355
PMCPMC5977492
OpenAlexW2807581280

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.