Evidence map›Paper›PMID 23565578›Full record

Trial reportBMC musculoskeletal disorders2013

Do patients care about higher flexion in total knee arthroplasty? A randomized, controlled, double-blinded trial.

Morten G Thomsen, Henrik Husted, Kristian S Otte, Gitte Holm, Anders Troelsen

Registry-linked trialAbstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in BMC musculoskeletal disorders, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00294528 (Comparing Clinical Outcome of 2 Different Total Knee Prostheses), which is not on this map. Cited by 31 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 6 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.

NCT00294528 phase4unknown statusnot on this map

Comparing Clinical Outcome of 2 Different Total Knee Prostheses: Nexgen LPS-Flex and AGC

TypeinterventionalSponsorHvidovre University HospitalRan2004 to 2010Enrolled100ConditionsOsteoarthritis, KneeArmsNexgen LPS-flex and AGC
3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
  2. Posterior-stabilized versus cruciate-retained implants for total knee arthroplasty: a meta-analysis of clinical trials.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2019
    Pooled it
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  5. Clinical outcomes after high-flex versus conventional total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2015
    Pooled it
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  19. No difference in joint awareness after TKA: a matched-pair analysis of a classic implant and its evolutional design.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019
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  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Morten G ThomsenDepartment of Orthopedics, University Hospital of Hvidovre, Hvidovre, Denmark. morten@grovethomsen.dk
Henrik Husted
Kristian S Otte
Gitte Holm
Anders Troelsen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLittle information exists to support that patients care about flexion beyond what is needed to perform activities of daily living (ADL) after Total knee arthroplasty (TKA). The purpose of this study was to investigate if the achievement of a higher degree of knee flexion after TKA would result in a better patient perceived outcome.

methodsThe study is a randomized, double-blinded, controlled trial in which 36 patients (mean age: 67.2 yrs) undergoing one-stage bilateral TKA randomly received a standard cruciate-retaining (CR) TKA in one knee and a high-flex posterior-stabilized (PS) TKA in the contra lateral knee. At follow-up ROM, satisfaction, pain, "feel" of the knee and the abilities in daily activities were assessed.

resultsAt 1-year follow-up we found an expected significantly higher degree of knee flexion of 7° in the high-flex knees (p = 0.001). The high-flex TKA's showed a mean active flexion of 121°. In both TKA's the median VAS pain score was 0, the median VAS satisfaction score was 9, and the median VAS score of the patient "feel" of the knee was 9 at 1-year follow-up. Further, there were no significant differences between the knees in the performance of daily activities.

conclusionsAs expected the high-flex TKA showed increased knee flexion, but no significant differences in the patient perceived outcomes were found. This suggests little relevance to the patients of the difference in knee flexion - when flexion is of this magnitude - as pain free ROM and high patient satisfaction were achieved with both TKA's.

trial registrationClinicalTrials.gov: NCT00294528.

Indexed as

Patient SatisfactionActivities of Daily LivingAgedAged, 80 and overArthroplasty, Replacement, KneeDouble-Blind MethodFemaleFollow-Up StudiesHumansKnee JointMaleMiddle AgedProspective StudiesRadiographyRange of Motion, ArticularTreatment Outcome

Identifiers

PMID23565578
PMCPMC3637231

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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.