Evidence map›Paper›PMID 34633511›Full record

SynthesisArchives of orthopaedic and trauma surgery2022

Clinical radiographic outcomes and survivorship of medial pivot design total knee arthroplasty: a systematic review of the literature.

Mattia Alessio-Mazzola, Antonio Clemente, Antonio Russo, Peter Mertens, Giorgio Burastero, Matteo Formica, Lamberto Felli

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Archives of orthopaedic and trauma surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

11 citing papers in PubMed, 21 citations in OpenAlex.

  1. Effects of anterior cruciate ligament resection and total knee arthroplasty on lower limb alignment and tibiofemoral rotation.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2026
    Article
  2. Medial pivot total knee arthroplasty.Journal of clinical orthopaedics and trauma · 2025
    Review
  3. Article
  4. Review
  5. Improved quadriceps efficiency with a medial pivot in comparison to a cruciate-retaining design in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. 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 at 3 institutions in 2 countries.

Mattia Alessio-MazzolaOrthopedic Clinic, Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132, Genoa, Italy. mattia.alessio@hotmail.com.ORCID http://orcid.org/0000-0001-6741-3713
Antonio ClementeOrthopedic Clinic, Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132, Genoa, Italy.
Antonio RussoOrthopedic Clinic, Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132, Genoa, Italy.
Peter MertensOrthopaedics and Traumatology Department, ZNA Middelheim, Antwerp, Belgium.
Giorgio BurasteroCentro di Chirurgia Protesica, Istituto Ortopedico Galeazzi IRCCS, Via Riccardo Galeazzi 4, 20161, Milan, Italy.
Matteo FormicaOrthopedic Clinic, Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132, Genoa, Italy.
Lamberto FelliIstituto Ortopedico Galeazzi IRCCS Chirurgia Articolare Sostitutiva e Chirurgia Ortopedica, Via Riccardo Galeazzi 4, 20161, Milan, Italy.
Ospedale Policlinico San Martino · ITIstituto Ortopedico Galeazzi · ITZNA Middelheim Hospital · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTotal knee arthroplasty is a reliable procedure able to reduce pain and disability in patients suffering from osteoarthritis. However, a considerable percentage of patients still experiences unsatisfactory results. Medial pivot total knee arthroplasty has been introduced in the clinical practice to overcome problems related with classic design implants and better mimic native knee kinematics. The aim of this study was to analyze survivorship and clinical and radiographic outcomes of medial pivot implants.

methodsA systematic research was conducted in eight different databases. Thirty-four studies met the inclusion criteria and were included in the analysis. Data on objective and patients-reported outcomes, radiographic alignment, and survivorship were collected and analyzed. Revision rate was expressed as revision per 100 components years.

resultA total of 3377 procedures were included. Mean follow-up was 85.7 months (range, 12-182). The revision per 100 components years was 0.19, which corresponds to a revision rate of 1.9% after 10 years. Mean post-operative range of motion was 117.3 ± 0.4°. Mean clinical and functional Knee Society Score were, respectively, 85.9 ± 1.1 and 84.7 ± 3.5 at final follow-up. Post-operative femorotibial alignment was 177.1 ± 0.5°. Alfa and beta angles were 95.7 ± 0.1° and 89.2 ± 0.1°, respectively. Gamma and delta angles were 2.3 ± 0.6° and 86.7 ± 0.4°.

conclusionMedial pivoting implants provided excellent survivorship and low revision rate, as well as good-to-excellent results in term of objective and patient-reported clinical outcomes, and reliable correction of radiographic parameters. More high-quality studies with long-term follow-up are needed to clarify the role of medial pivoting implants.

Indexed as

Arthroplasty, Replacement, KneeKnee ProsthesisOsteoarthritis, KneeFollow-Up StudiesHumansKnee JointProsthesis DesignRange of Motion, ArticularRetrospective StudiesSurvivorshipMedial congruent kneeMedial pivot kneeMedial pivot TKAMedial stabilized kneeTKA designTKA kinematics

Identifiers

PMID34633511
PMCPMC9522696
OpenAlexW3207859512

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

None linked

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.