Evidence map›Paper›PMID 30203198›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019

Patellofemoral design enhancements reduce long-term complications of postero-stabilized total knee arthroplasty.

Nicolas Jan, Christian Fontaine, Henri Migaud, Gilles Pasquier, Jeremy Valluy, Mo Saffarini, Sophie Putman

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In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 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.

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

3 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  3. 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.

Nicolas JanUniversité de Lille Nord de France, Lille, France.
Christian FontaineUniversité de Lille Nord de France, Lille, France.
Henri MigaudUniversité de Lille Nord de France, Lille, France.
Gilles PasquierUniversité de Lille Nord de France, Lille, France.
Jeremy ValluyReSurg SA, ch. de la Vuarpilliere 35, 1260, Nyon, Switzerland.
Mo SaffariniReSurg SA, ch. de la Vuarpilliere 35, 1260, Nyon, Switzerland. journals@resurg.eu.ORCID http://orcid.org/0000-0002-9656-987X
Sophie PutmanUniversité de Lille Nord de France, Lille, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeFew studies investigated whether trochlear and patellar design enhancements improve long-term outcomes of total knee arthroplasty (TKA). This study aimed to compare the long-term survival and complication rates of two consecutive generations of the same TKA system with identical tibiofemoral geometry, but different patellofemoral designs.

methodsThe authors retrieved the records of 93 patients (104 knees) operated with the HLS II system and 116 patients (122 knees) operated with HLS Evolution system. Patients were evaluated preoperatively and at a minimum of 10 years noting all complications. Kaplan-Meier (KM) survival was compared for two endpoints: (1) revision of all components and (2) revision of any component.

resultsFrom the HLS II series, the incidence of revision of all components was 6.4%, and of any component was 9.8%. From the HLS Evolution series, the incidence of revision of all components was 4.1%, and of any component was 5.1%. Comparing the survival at equivalent follow-up of 14 years, considering revision of all components, the HLS II had higher survival than the HLS Evolution (98.9% vs 95.9%), while considering revision of any component, the HLS II had lower survival than the HLS Evolution (93.0% vs 94.9%). The differences in survival of the two implants were not significant, neither at equivalent follow-up of 14 years (n.s.), nor at maximum follow-up of each cohort (n.s.). The complication rate was higher for the HLS II series compared to the HLS Evolution (28% vs 12%, p = 0.009), but patellofemoral complications were not more frequent (8% vs 6%, n.s.).

conclusionsThough the differences in survival of the two implants were not significant, conflicting findings are observed due to partial revisions for patellar fractures (5 in the HLS II series and 1 in the HLS Evolution series) which could be related to patellofemoral design enhancements. This study highlights the importance of patello-femoral geometry, which is often overlooked in TKA. LEVEL OF EVIDENCE: Retrospective comparative study, Level III.

Indexed as

Knee ProsthesisAdultAgedAged, 80 and overArthroplasty, Replacement, KneeFemaleFemurFollow-Up StudiesFranceHumansIncidenceKnee JointMaleMiddle AgedPatellaPostoperative ComplicationsComplicationsLong-termPatellar buttonPatellofemoral jointSurvivalTotal knee arthroplastyTrochlear design

Identifiers

PMID30203198

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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.