Evidence map›Paper›PMID 26573377›Full record

ArticleSeminars in arthritis and rheumatism2016

Improvement following total knee replacement surgery: Exploring preoperative symptoms and change in preoperative symptoms.

Ernest R Vina, Michael J Hannon, C Kent Kwoh

Open access · hybridAbstract read
In one paragraph

Article in Seminars in arthritis and rheumatism, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 13% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
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  6. WOMAC-based recovery after total knee arthroplasty in a multiethnic Asian cohort: a 5-year registry-based study of interval-specific predictors of improvement.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
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  9. Medial unicondylar knee arthroplasty should be reserved for patients with complete joint space collapse.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

3 authors at 2 institutions in 1 country.

Ernest R VinaDepartment of Medicine, University of Arizona Arthritis Center, University of Arizona, 1501 N Campbell Ave, PO Box 245093, Tucson, AZ 85724-5093. Electronic address: evina@email.arizona.edu.
Michael J HannonDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA.
C Kent KwohDepartment of Medicine, University of Arizona Arthritis Center, University of Arizona, 1501 N Campbell Ave, PO Box 245093, Tucson, AZ 85724-5093.
University of Arizona · USUniversity of Pittsburgh · US

Funding

DATA COORDINATING CENTER FOR THE OSTEOARTHRITIS INITIATIVE-264022258N01AR022258 · NIAMS · UNIVERSITY OF CALIFORNIA SYS OFFICE/PRES · 2003 to 2003
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CLINICAL CENTERS FOR THE OSTEOARTHRITIS INITIATIVE-N01AR22260N01AR022260 · NIAMS · UNIVERSITY OF PITTSBURGH · PI KWOH, KENT · 2002 to 2006
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CLINICAL CENTERS FOR THE OSTEOARTHRITIS INITIATIVE-N01AR22261N01AR022261 · NIAMS · OHIO STATE UNIVERSITY RESEARCH · PI JACKSON, REBECCA · 2002 to 2006
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CLINICAL CENTER FOR THE OSTEOARTHRITIS-264022262-264022262N01AR022262 · NIAMS · THE MEMORIAL HOSPITAL · PI ASSAF, ANNLOUISE R. · 2002 to 2006
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NIAMS NIH HHS N01 AR022258NIAMS NIH HHS N01 AR022260NIAMS NIH HHS N01 AR022261NIAMS NIH HHS N01 AR022262
6 · The paper itself

Abstract

objectiveTo determine whether changes in preoperative osteoarthritis (OA) symptoms are associated with improvement after total knee replacement (TKR) and to identify predictors of clinically significant improvement.

methodsData on Osteoarthritis Initiative participants who were annually assessed and underwent TKR were included. T0 was the assessment prior to TKR while T-1 was the assessment prior to that. T+2 was the second assessment after TKR. We compiled data on the Western Ontario and McMaster Universities OA Index (WOMAC), OA-related symptoms, and radiographic severity. We defined clinically significant improvement as improvement in WOMAC total score ≥ to the minimal important difference (MID) (0.5 SD of mean change) between T0 and T+2 and also considered other definitions of improvement. Logistic regression models were performed to evaluate the relationship between improvement and preoperative measures.

resultsImproved (n = 211) compared to unimproved (n = 58) patients had greater worsening of their WOMAC pain (p = 0.002) and disability (p < 0.001) from T-1 to T0. Preoperative measures as predictors of improvement included higher WOMAC disability (OR = 1.08, p < 0.001), presence of chronic OA symptoms in the surgical knee (OR = 5.77, p = 0.033), absence of OA-related symptoms in the contralateral knee (OR = 9.25, p < 0.001), exposure to frequent knee bending (OR = 3.46, p = 0.040), and having a Kellgren-Lawrence x-ray grade of ≥2 in the contralateral knee (OR = 4.71, p = 0.010).

conclusionsMore than 75% of participants had improvement after TKR. Improved patients were more likely to have escalation of OA pain and disability prior to surgery than unimproved patients. Other preoperative measures predicted improvement after TKR.

Indexed as

Arthroplasty, Replacement, KneeAgedDisease ProgressionHealth StatusHumansKnee JointMiddle AgedOsteoarthritis, KneeQuality of LifeRecovery of FunctionSeverity of Illness IndexTreatment Outcomeimprovementjoint replacement surgerykneeosteoarthritispostoperative outcomes

Identifiers

PMID26573377
PMCPMC5818258
OpenAlexW2190732591

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.