Evidence map›Paper›PMID 33011847›Full record

ArticleArchives of orthopaedic and trauma surgery2020

Primary stability of calcar-guided short-stem total hip arthroplasty in the treatment of osteonecrosis of the femoral head: migration analysis using EBRA-FCA.

Yama Afghanyar, Christoph Danckwardt, Miriam Schwieger, Uwe Felmeden, Philipp Drees, Jens Dargel, Philipp Rehbein, Karl Philipp Kutzner

Open access · hybridAbstract read
In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2020. 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
2.1field-weighted citation impact, top 14% 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, 18 citations in OpenAlex.

  1. Article
  2. Same same but different: Introduction of a classification system in calcar-guided short-stem total hip arthroplasty.Hip international : the journal of clinical and experimental research on hip pathology and therapy · 2025
    Article
  3. Article
  4. Observational
  5. Observational
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  7. Article
  8. Article
  9. Article
  10. Review
  11. Conversion of failed internal fixation in proximal femur fractures using calcar-guided short-stem total hip arthroplasty.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2022
    Article
  12. Review
  13. 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

8 authors at 2 institutions in 1 country.

Yama AfghanyarDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Christoph DanckwardtDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Miriam SchwiegerDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Uwe FelmedenDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Philipp DreesDepartment of Orthopaedics and Traumatology, University Medical Centre of the Johannes Gutenberg-University of Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.
Jens DargelDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Philipp RehbeinDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany.
Karl Philipp KutznerDepartment of Orthopaedic Surgery, St. Josefs Hospital Wiesbaden, Beethovenstr. 20, 65189, Wiesbaden, Germany. kkutzner@joho.de.ORCID http://orcid.org/0000-0001-6363-8165
St. Josefs Hospital · DEJohannes Gutenberg University Mainz · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionOsteonecrosis of the femoral head (ONFH) is a disabling condition that often results in secondary arthritis necessitating total hip arthroplasty (THA). Short-stem THA has constantly gained popularity. It remains controversial, whether ONFH represents a risk factor for failure after the implantation of short stems with pronounced metaphyseal anchorage. The potential spread of the osteonecrotic area and bone marrow edema into the metaphyseal bone might result in compromised stability. Early implant migration is considered predictive of subsequent aseptic loosening. The purpose of this study was a migration analysis of a modern, calcar-guided short-stem implant in patients with ONFH in a mid-term follow-up. MATERIALS AND

methodsThis retrospective analysis investigated the migration pattern of 45 calcar-guided short stems in patients with ONFH, using Einzel-Bild-Roentgen-Analyse Femoral-Component-Analysis (EBRA-FCA). Influencing factors such as ARCO categories, age, gender, body weight and BMI were analyzed. Complications and adverse events were documented.

resultsAt mid-term [48.1 months (SD 20.7 months)], mean axial migration was 1.56 mm (SD 1.77 mm). Mean migration rate stabilized after 2 years. No influence of ARCO categories, age and BMI was found. A tendency of increased axial migration was observed in male patients and in overweight patients. No revision surgeries had to be performed during follow-up.

conclusionThe results indicate a migration pattern comparable to that of primary osteoarthritis patients with slight initial migration under full load followed by subsequent stabilization in the metaphyseal femur. The 100% survival rate at mid-term supports the usage of this short-stem design in patients with ONFH.

Indexed as

Hip ProsthesisProsthesis DesignProsthesis FailureAdultAgedAged, 80 and overArthroplasty, Replacement, HipBody WeightFemaleFemurFemur HeadFemur Head NecrosisFollow-Up StudiesHumansMaleMiddle AgedEBRAMigrationOptimysOsteonecrosis of the femoral headShort stem arthroplastyTotal hip arthroplasty

Identifiers

PMID33011847
PMCPMC7674354
OpenAlexW3091707929

What OpenQuestion holds

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LicenceCC BY
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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.