Evidence map›Paper›PMID 34669039›Full record

ArticleArchives of orthopaedic and trauma surgery2022

Patellar height after unicompartmental knee arthroplasty: comparison between fixed and mobile bearing.

Riccardo D'Ambrosi, Matteo Buda, Alessandro Nuara, Ilaria Mariani, Michele Scelsi, Federico Valli, Nicola Ursino, Michael Tobias Hirschmann

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Article 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 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

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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

8 authors.

Riccardo D'AmbrosiIRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4, 20161, Milan, Italy. riccardo.dambrosi@hotmail.it.
Matteo BudaOspedale Monselice "Madre Teresa di Calcutta", Monselice, Padua, Italy.
Alessandro NuaraUniversità degli Studi di Milano, Milan, Italy.
Ilaria MarianiInstitute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy.
Michele ScelsiIRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4, 20161, Milan, Italy.
Federico ValliIRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4, 20161, Milan, Italy.
Nicola UrsinoIRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4, 20161, Milan, Italy.
Michael Tobias HirschmannDepartment of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland, Bruderholz, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study was to determine the changes in patellar heights by comparing standardised pre- and post-operative radiographs in a consecutive series of patients undergoing unicompartmental knee arthroplasty (UKA) with two different approaches and implant designs [fixed bearing (FB) vs mobile bearing (MB)] and to correlate the patellar heights with clinical outcomes.

methodsOne hundred and seventy-two UKA patients were prospectively enrolled in the study. 75 patients underwent a minimally invasive FB medial UKA (referred to hereinafter as the 'FB group'); 97 patients were treated with a minimally invasive MB medial UKA. The pre-operative and mid-term (1-year) post-operative patellar heights and clinical scores of these groups of patients were compared using the Insall-Salvati (IS) and Caton-Deschamps (CD) indices and the Oxford Knee Score (OKS).

resultsNo differences were found between the two groups either with regard to the pre-operative data (p > 0.05) or between pre- and post-operative radiographic scores at the time of each follow-up (p > 0.05). Both the groups reported a significant clinical improvement (p<0.05) as did all the sub-groups (p < 0.05). In the MB group, a higher CD index in females was found at the final follow-up stage (p = 0.043) and a higher pre-operative CD index was found in patients with BMI ≥ 28 (p = 0.040). A statistically negative correlation was found between the pre-operative OKS and pre-operative IS index (rho=- 0.165; p=0.031).

conclusionsBoth FB and MB arthroplastys with different surgical approaches did not change the patellar height regardless of the age, gender and BMI at short-medium-term follow-up. The post-operative patellar height seems not to be correlated with the clinical outcomes. A higher pre-operative IS index was correlated with knee pain and function. LEVEL OF EVIDENCE: Level II-prospective comparative study. STUDY REGISTRATION: Researchregistry6433- www.researchregistry.com .

Indexed as

Arthroplasty, Replacement, KneeKnee ProsthesisOsteoarthritis, KneeFemaleHumansKnee JointProspective StudiesTreatment OutcomeCaton–DeschampsFixed bearingInsall–Salvati indexMobile bearingPatellar heightUnicompartmental knee arthroplasty

Identifiers

PMID34669039

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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.