Evidence map›Paper›PMID 36973427›Full record

ArticleInternational orthopaedics2023

Influence of different CCD angles on osseointegration and radiological changes after total hip arthroplasty of a triple wedge shape cementless femoral stem: a prospective cohort study.

Björn Michel, Peter Augat, Markus T Berninger, Lena Keppler, Gerhard Simon, Christian von Rüden, Christof Birkenmaier, Rolf Schipp, Johannes Becker

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In one paragraph

Article in International orthopaedics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.6field-weighted citation impact, top 32% 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

2 citing papers in PubMed, 2 citations in OpenAlex.

  1. Trial
  2. 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

9 authors at 5 institutions in 2 countries.

Björn MichelKlinikum Garmisch-Partenkirchen, Endogap, Joint Replacement Institute, Auenstraße 6, 82467, Garmisch-Partenkirchen, Germany.
Peter AugatInstitute for Biomechanics, Paracelsus Medical University, Salzburg, Austria.
Markus T BerningerDepartment of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Lena KepplerDepartment of Trauma Surgery, BG Unfallklinik Murnau, Murnau, Germany.
Gerhard SimonKlinikum Garmisch-Partenkirchen, Department of Radiology & Nuclear Medicine, Auenstraße 6, 82467, Garmisch-Partenkirchen, Germany.
Christian von RüdenInstitute for Biomechanics, Paracelsus Medical University, Salzburg, Austria.
Christof BirkenmaierDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich, Ludwig-Maximilians Universität Munich, Munich, Germany.
Rolf SchippKlinikum Garmisch-Partenkirchen, Endogap, Joint Replacement Institute, Auenstraße 6, 82467, Garmisch-Partenkirchen, Germany.
Johannes BeckerKlinikum Garmisch-Partenkirchen, Endogap, Joint Replacement Institute, Auenstraße 6, 82467, Garmisch-Partenkirchen, Germany. johannes.becker@klinikum-gap.de.ORCID http://orcid.org/0000-0003-3944-500X
Garmisch-Partenkirchen Medical Center · DEParacelsus Medical University · ATBerufsgenossenschaftliche Unfallklinik Murnau · DEMünchen Klinik · DEUniversität Hamburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study was to evaluate the osseointegration and radiological outcomes in patients after total hip arthroplasty, hypothesizing different load patterns with one cementless stem design and different CCD angles (CLS Spotorno femoral stem 125° vs 135°).

methodsAll cases of degenerative hip osteoarthritis fulfilling strict inclusion criteria were treated with cementless hip arthroplasty between 2008 and 2017. Ninety-two out of one hundred six cases were clinically and radiologically examined three and 12 months after implantation. Two groups with each 46 patients were rendered prospectively and compared in clinical (Harris Hip Score) and radiological outcome.

resultsAt final follow-up, no significant difference regarding Harris Hip Score was detected between the two groups (mean 99.2 ± 3.7 vs. 99.3 ± 2.5; p = 0.73). Cortical hypertrophy was found in none of the patients. Stress shielding was seen in a total of 52 hips (n = 27 vs. n = 25; 57% of the 92 hips). No significant difference regarding stress shielding was detected when comparing both groups (p = 0.67). Significant bone density loss was detected in Gruen zone one and two in the 125° group. The 135° group showed significant radiolucency in Gruen zone seven. No overall radiological loosening or subsidence of the femoral component was observed.

conclusionAccording to our results, the use of a femoral component with a 125° CCD angle versus a 135° CCD did not result in a different osseointegration and load transfer with a clinically relevant significance.

Indexed as

Arthroplasty, Replacement, HipBone Diseases, MetabolicHip ProsthesisFollow-Up StudiesHumansOsseointegrationProspective StudiesProsthesis DesignTreatment OutcomeBone mineral densityBone remodelingCLS Spotorno stemDEXAStress shieldingTotal hip arthroplasty

Identifiers

PMID36973427
OpenAlexW4360990223

What OpenQuestion holds

Textmetadata
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.