Evidence map›Paper›PMID 28266241›Full record

ArticleActa orthopaedica2017

Tibial component rotation around the transverse axis measured by radiostereometry predicts aseptic loosening better than maximal total point motion.

Asgeir Gudnason, Gunnar Adalberth, Kjell-Gunnar Nilsson, Nils P Hailer

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In one paragraph

Article in Acta orthopaedica, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
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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

23 citing papers in PubMed, 2 syntheses or guidelines 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

4 authors.

Asgeir Gudnasona Department of Orthopedics , Institute of Surgical Sciences, Uppsala University Hospital , Uppsala.
Gunnar Adalbertha Department of Orthopedics , Institute of Surgical Sciences, Uppsala University Hospital , Uppsala.
Kjell-Gunnar Nilssonb Department of Surgical and Perioperative Sciences , University of Umeå , Umeå , Sweden.
Nils P Hailera Department of Orthopedics , Institute of Surgical Sciences, Uppsala University Hospital , Uppsala.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose - Maximal total point motion (MTPM) measured by radiostereometry (RSA) is widely used as a predictor of total knee arthroplasty (TKA) loosening. We compared the ability of different RSA measurements at different time points to predict loosening of tibial TKA components in the long term. Patients and methods - 116 TKAs in 116 patients were included in our analysis. 16 (14.8-17.4) years after surgery, 5 tibial components had been revised due to aseptic loosening. Receiver operating characteristic curves were calculated in order to investigate the specificity and sensitivity of different RSA parameters at different thresholds. Results - Rotation around the transverse (x-) axis measured 2 years postoperatively had the best predictive value of all parameters, with an area under the curve (AUC) of 80%. Using a threshold of 0.8 degrees, a specificity of 85% and a sensitivity of 50% were reached. The AUC for tibial component distal translation was 79% and it was 77% for proximal translation, whereas it was only 68% for MTPM. Interpretation - Rotation of the cemented tibial component around the transverse axis, proximal translation, and distal translation are slightly better at predicting aseptic loosening than MTPM, and tibial component migration measured after 2 years gives a good prediction of aseptic loosening up to 15 years.

Indexed as

Knee ProsthesisAdultArthroplasty, Replacement, KneeBone CementsCementationFemaleFollow-Up StudiesHumansMaleMotionPrognosisProsthesis DesignProsthesis FailureRadiostereometric AnalysisReoperationRisk AssessmentBone Cements

Identifiers

PMID28266241
PMCPMC5434596

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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.