Evidence map›Paper›PMID 31218390›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020

No difference in patellar position between mobile-bearing and fixed-bearing total knee arthroplasty for medial osteoarthritis: a prospective randomized study.

Elliot Sappey-Marinier, Felipe Galvão A de Abreu, Padhraig O'Loughlin, Romain Gaillard, Philippe Neyret, Sebastien Lustig, Elvire Servien

Registry-linked trialAbstract readComparative StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00435357 (Comparison Between Fixed- Versus Mobile-bearing TKA), which is not on this map. Cited by 5 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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.

NCT00435357 nacompletednot on this map

Comparison Between Fixed- Versus Mobile-bearing TKA : a Randomized Prospective Study

TypeinterventionalSponsorHospices Civils de LyonRan2007 to 2009Enrolled160ConditionsKnee ArthritisArmsmobile-bearing TKA, fixed- bearing TKA
3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. No difference between mobile and fixed bearing in primary total knee arthroplasty: a meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Pooled it
  2. Mobile-bearing versus fixed-bearing total knee arthroplasty: a meta-analysis of randomized controlled trials.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2022
    Pooled it
  3. Pooled it
  4. Trial
  5. 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

7 authors.

Elliot Sappey-MarinierFIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 grande rue de la croix rousse, 69004, Lyon, France. esappey@gmail.com.
Felipe Galvão A de AbreuFIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 grande rue de la croix rousse, 69004, Lyon, France.
Padhraig O'LoughlinDepartment of Trauma and Orthopaedic Surgery, Cork University Hospital, Wilton, Cork, Ireland.
Romain GaillardFIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 grande rue de la croix rousse, 69004, Lyon, France.
Philippe NeyretClinique Genolier, 3 route du muids, 1272, Genolier, Switzerland.
Sebastien LustigFIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 grande rue de la croix rousse, 69004, Lyon, France.
Elvire ServienFIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 grande rue de la croix rousse, 69004, Lyon, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTotal knee arthroplasty (TKA) is the treatment of choice for severe osteoarthritis of the knee. Many studies have been performed comparing mobile- and fixed-bearing designs; however, there are insufficient data regarding the patellar position in either system. This study aimed to compare the resultant patellar position with a mobile- versus a fixed-bearing TKA and the influence of both designs on clinical outcomes. MATERIALS AND

methodsIn this prospective randomized study, between 2007 and 2009, 160 TKA patients were assessed; 79 received a mobile-bearing and 81 received a fixed-bearing implant, for medial compartment osteoarthritis. A posteriorly stabilized, HLS Noetos knee prosthesis (Tornier, Saint-Ismier, France) was used in all cases. The only difference between the groups was whether the tibial component incorporated a fixed or mobile bearing. The patella was resurfaced in all cases. The International Knee Society Score (KSS) and the patellar tilt and translation were compared post-operatively. Patellar translation and patellar tilt analyses were subdivided into two subgroups (< 5 mm vs > 5 mm and < 5° vs > 5°).

resultsThe KSS was not statistically different between the groups at a mean follow-up of 7.4 years (range 5-11 years). Patellar translation and patellar tilt were not statistically different between the groups. When considering the patellar translation subgroup analysis, a significantly increased risk of patellar translation, greater than 5 mm, was found in the mobile-bearing group compared to fixed-bearing group (OR = 2.3; p = 0.048) without generating any meaningful difference in clinical outcomes.

conclusionThe theoretical advantages of mobile-bearing implants compared to fixed-bearing implants were not demonstrated in this randomized study, at mid-term follow-up. In daily practice, the choice between mobile-bearing and fixed-bearing designs should be based on the experience and clinical judgment of the surgeon. LEVEL OF EVIDENCE: Prospective randomized study, level I.

Indexed as

Knee ProsthesisAgedArthroplasty, Replacement, KneeFemaleHumansKnee JointMaleMiddle AgedOsteoarthritis, KneePatellaProspective StudiesProsthesis DesignRange of Motion, ArticularTibiaFixed bearingMobile bearingPatellar positionTotal knee arthroplastyTotal knee replacement

Identifiers

PMID31218390

What OpenQuestion holds

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Registered trials

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.