Evidence map›Paper›PMID 30069589›Full record

ArticleInternational orthopaedics2019

Predictors for secondary patellar resurfacing after primary total knee arthroplasty using a "patella-friendly" total knee arthroplasty system.

Philip P Roessler, Randa Moussa, Cornelius Jacobs, Karl F Schüttler, Thomas Stein, Frank A Schildberg, Dieter C Wirtz

Abstract read
PubMed Publisher
In one paragraph

Article in International orthopaedics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

7 citing papers in PubMed, 15 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. Article
  5. Patellar facet ratio affects knee pain, stair climbing and stair descent after TKA without patellar resurfacing.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020
    Article
  6. Review
  7. Review
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 1 country.

Philip P RoesslerDepartment of Orthopaedics and Trauma Surgery, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany. philip.roessler@ukbonn.de.ORCID http://orcid.org/0000-0002-1574-0111
Randa MoussaDepartment of Orthopaedics and Trauma Surgery, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany.
Cornelius JacobsDepartment of Orthopaedics and Trauma Surgery, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany.
Karl F SchüttlerCenter for Orthopedics and Traumatology, University Hospital Giessen & Marburg, Marburg, Germany.
Thomas SteinDepartment of Sporttraumatology - Knee- and Shoulder-Surgery, Berufsgenossenschaftliche Unfallklinik Frankfurt am Main, Frankfurt, Germany.
Frank A SchildbergDepartment of Orthopaedics and Trauma Surgery, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany.
Dieter C WirtzDepartment of Orthopaedics and Trauma Surgery, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany.
University Hospital Bonn · DEBerufsgenossenschaftliche Unfallklinik Frankfurt am Main · DEUniversitätsklinikum Gießen und Marburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePatellar resurfacing (PR) in total knee arthroplasty (TKA) is still one of the major controversies in orthopaedic surgery today. The aim of the present retrospective case-control study was to identify predictors for secondary patellar resurfacing (SPR) after initial TKA to create a rationale for surgeons to decide which patients to resurface primarily. It was hypothesized that proper TKA implantation and component positioning as well as a maintained physiological patellar geometry will lead to a reduced risk of SPR. Overmore, it was hypothesized that intrinsic factors like overweight might also have an influence on the need for SPR.

methodsAfter identification of suitable patients and age/sex matching in a 1:2 fashion, 29 cases (TKA/SPR) and 58 controls (TKA) were included and screened for available clinical and epidemiological data as well as for radiographic data after primary TKA. Pearson's correlation analysis as well as logistic regression modeling was performed to identify possible predictors for SPR following TKA.

resultsBinary logistic regression was able to correctly classify 88.5% of patients into case or control groups. It indicated that patella tilt, patella height, and thickness as well as the delta angle were significant predictors of a need for SPR following primary TKA. An increase in patellar width by 1 mm will increase the risk of SPR, while an increase in patellar thickness by 1 mm will reduce it. An increase in patellar tilt by 1° will also increase the risk of SPR. Finally, an increase in delta angle by 1° will again reduce the risk of SPR.

conclusionsEasy and accessible radiographic measurements have been identified as possible predictors of SPR following primary TKA. Although indication for primary PR may still remain a controversial topic, a rationale has been proposed in this study to support surgeons in objectively estimating an individual patient's risk for SPR prior to primary TKA measuring the patella tilt, width, and thickness. Overmore, regarding surgical aspects of TKA, tibial component positioning has also been shown to be of importance to reduce the risk of SPR.

Indexed as

AgedArthroplasty, Replacement, KneeCase-Control StudiesFemaleHumansMaleMiddle AgedPatellaRetrospective StudiesPatellar resurfacingPatellofemoral painPredictorsTotal knee arthroplasty

Identifiers

PMID30069589
OpenAlexW2885891044

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.