Evidence map›Paper›PMID 33447874›Full record

ArticleInternational orthopaedics2021

Total knee arthroplasty improves the quality-adjusted life years in patients who exceeded their estimated life expectancy.

Michele Palazzuolo, Alexander Antoniadis, Jaad Mahlouly, Julien Wegrzyn

Open access · hybridAbstract read
In one paragraph

Article in International orthopaedics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 5% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Evaluating Patient Satisfaction Outcome After Total Knee Arthroplasty Done at Our Hospital's Joint Replacement Registry, Egypt.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026
    Observational
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  12. Global mapping of institutional and hospital-based (Level II-IV) arthroplasty registries: a scoping review.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Michele PalazzuoloDepartment of Orthopedic Surgery, Lausanne University Hospital - CHUV, Lausanne, Switzerland.
Alexander AntoniadisDepartment of Orthopedic Surgery, Lausanne University Hospital - CHUV, Lausanne, Switzerland.
Jaad MahloulyDepartment of Orthopedic Surgery, Lausanne University Hospital - CHUV, Lausanne, Switzerland.
Julien WegrzynDepartment of Orthopedic Surgery, Lausanne University Hospital - CHUV, Lausanne, Switzerland. julien.wegrzyn@chuv.ch.ORCID 0000-0003-0194-8664
University Hospital of Lausanne · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTotal knee arthroplasty (TKA) is the treatment of choice for end-stage osteoarthritis though its risk-benefit ratio in elderly patients remains debated. This study aimed to evaluate the functional outcome, rates of complication and mortality, and quality-adjusted life years (QALY) in patients who exceeded their estimated life expectancy.

methodsNinety-seven TKA implanted in 86 patients who exceeded their estimated life expectancy at the time of TKA were prospectively included in our institutional joint registry and retrospectively analyzed. At latest follow-up, the functional outcome with the Knee Society Score (KSS), rates of complication and mortality, and QALY with utility value of EuroQol-5D score were evaluated.

resultsAt a mean follow-up of three ± one years, the pre- to post-operative KSS improved significantly (p < 0.01). The rates of surgical and major medical complications related to TKA were 3% and 10%, respectively. The re-operation rate with readmission was 3% while no TKA was revised. The 30-day and one year mortality was 1% and 3%, respectively. The pre- to one year post-operative QALY improved significantly (p < 0.01). The cumulative QALY five years after TKA was four years. Assuming that these patients did not undergo TKA, their cumulative QALY at five years would have been only two years.

conclusionTKA is an effective procedure for the treatment of end-stage osteoarthritis in patients who exceeded their estimated life expectancy. TKA provided significant improvement in function and quality of life without adversely affecting overall morbidity and mortality. Therefore, TKA should not be contra-indicated in elderly patients based on their advanced age alone.

Indexed as

Arthroplasty, Replacement, KneeOsteoarthritis, KneeAgedHumansKnee JointLife ExpectancyQuality-Adjusted Life YearsQuality of LifeRetrospective StudiesTreatment OutcomeComplicationElderly patientsMortalityQuality-adjusted life yearsTotal knee arthroplasty

Identifiers

PMID33447874
PMCPMC7892693
OpenAlexW3124916887

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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.