Evidence map›Paper›PMID 24972998›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014

Tibial component alignment and risk of loosening in unicompartmental knee arthroplasty: a radiographic and radiostereometric study.

P Barbadoro, A Ensini, A Leardini, M d'Amato, A Feliciangeli, A Timoncini, F Amadei, C Belvedere, S Giannini

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Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 10 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 10 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

48 citing papers in PubMed, 10 syntheses or guidelines pooled it.

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  4. Kinematic alignment of medial UKA is safe: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
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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

9 authors.

P Barbadoro1st Ortopaedic-Traumatologic Clinic, Istituto Ortopedico Rizzoli, University of Bologna, Via Pupilli 1, 40136, Bologna, Bo, Italy, paolobarba@hotmail.it.
A Ensini
A Leardini
M d'Amato
A Feliciangeli
A Timoncini
F Amadei
C Belvedere
S Giannini

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeUnicompartmental knee arthroplasty (UKA) has shown a higher rate of revision compared with total knee arthroplasty. The success of UKA depends on prosthesis component alignment, fixation and soft tissue integrity. The tibial cut is the crucial surgical step. The hypothesis of the present study is that tibial component malalignment is correlated with its risk of loosening in UKA.

methodsThis study was performed in twenty-three patients undergoing primary cemented unicompartmental knee arthroplasties. Translations and rotations of the tibial component and the maximum total point motion (MTPM) were measured using radiostereometric analysis at 3, 6, 12 and 24 months. Standard radiological evaluations were also performed immediately before and after surgery. Varus/valgus and posterior slope of the tibial component and tibial-femoral axes were correlated with radiostereometric micro-motion. A survival analysis was also performed at an average of 5.9 years by contacting patients by phone.

resultsVarus alignment of the tibial component was significantly correlated with MTPM, anterior tibial sinking, varus rotation and anterior and medial translations from radiostereometry. The posterior slope of the tibial component was correlated with external rotation. The survival rate at an average of 5.9 years was 89%. The two patients who underwent revision presented a tibial component varus angle of 10° for both.

conclusionsThere is correlation between varus orientation of the tibial component and MTPM from radiostereometry in unicompartmental knee arthroplasties. Particularly, a misalignment in varus larger than 5° could lead to risk of loosening the tibial component. LEVEL OF EVIDENCE: Prognostic studies-retrospective study, Level II.

Indexed as

AgedAged, 80 and overArthroplasty, Replacement, KneeBone MalalignmentFemaleHumansJoint DiseasesKnee JointKnee ProsthesisMaleMiddle AgedProsthesis FailureRadiostereometric AnalysisRetrospective StudiesRotationTibia

Identifiers

PMID24972998

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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.