Evidence map›Paper›PMID 32859278›Full record

ArticleKnee surgery & related research2020

One-year Oxford knee scores should be used in preference to 6-month scores when assessing the outcome of total knee arthroplasty.

N D Clement, N Ng, D MacDonald, C E H Scott, C R Howie

Open access · diamondAbstract read
In one paragraph

Article in Knee surgery & related research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed, 29 citations in OpenAlex.

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  10. Mid-term results of an anatomic total knee replacement design.Archives of orthopaedic and trauma surgery · 2024
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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

5 authors at 1 institution in 1 country.

N D ClementDepartment of Orthopaedics, The Royal Infirmary of Edinburgh, 51 Little France Cres, Edinburgh, EH16 4SA, UK.
N NgDepartment of Orthopaedics, The Royal Infirmary of Edinburgh, 51 Little France Cres, Edinburgh, EH16 4SA, UK. Nathannghuang@gmail.com.ORCID http://orcid.org/0000-0001-7063-6870
D MacDonaldDepartment of Orthopaedics, The Royal Infirmary of Edinburgh, 51 Little France Cres, Edinburgh, EH16 4SA, UK.
C E H ScottDepartment of Orthopaedics, The Royal Infirmary of Edinburgh, 51 Little France Cres, Edinburgh, EH16 4SA, UK.
C R HowieDepartment of Orthopaedics, The Royal Infirmary of Edinburgh, 51 Little France Cres, Edinburgh, EH16 4SA, UK.
Edinburgh Royal Infirmary · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe primary aim of this study was to assess whether there was a clinically significant difference in the mean Oxford knee score (OKS) between 6 and 12 months after total knee arthroplasty (TKA). The secondary aim was to identify variables associated with a clinically significant change in the OKS between 6 and 12 months.

methodsA retrospective cohort study was undertaken using an established arthroplasty database of 1574 primary TKA procedures. Patient demographics, body mass index (BMI), comorbidities, OKS and EuroQoL 5-domain (EQ-5D) score were collected preoperatively and at 6 and 12 months postoperatively. A clinically significant change in the OKS was defined as 5 points or more.

resultsThere was a 1.1-point increase in the OKS between 6 and 12 months postoperatively, which was statistically significant (95% confidence (CI) 0.8-1.3, p < 0.0001). There were 381 (24.2%) patients who had a clinically significant improvement in their OKS from 6 to 12 months. After adjusting for confounding, patients with a lower BMI (p = 0.028), without diabetes mellitus (p < 0.001), a better preoperative OKS (p < 0.001) or a worse 6-month OKS (p < 0.001) were more likely to have a clinically significant improvement. A 6-month OKS < 36 points was a reliable predictor of a clinically significant improvement in the 6-month to 12-month OKS (area under the curve 0.73, 95% CI 0.70-0.75, p < 0.001).

conclusionOverall, there was no clinically significant change in the OKS from 6 to 12 months; however, a clinically significant improvement was observed in approximately a quarter of patients and was more likely in those scoring less than 36 points at 6 months. LEVEL OF EVIDENCE: retrospective diagnostic study, level III.

Indexed as

12 Months6 MonthsChangeDifferenceOutcomeOxford knee scoreTotal knee arthroplasty

Identifiers

PMID32859278
PMCPMC7456047
OpenAlexW3082561204

What OpenQuestion holds

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LicenceCC BY
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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.