Evidence map›Paper›PMID 20060949›Full record

ArticleOsteoarthritis and cartilage2010

Most patients gain weight in the 2 years after total knee arthroplasty: comparison to a healthy control group.

J A Zeni, L Snyder-Mackler

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Osteoarthritis and cartilage, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 3 pooled it
2.7field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 3 syntheses or guidelines pooled it, 82 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

J A ZeniDepartment of Physical Therapy, University of Delaware, Newark, DE 19716, USA. jzenijr@gmail.com
L Snyder-Mackler
University of Delaware · US

Funding

VALGUS BRACING FOR MEDIAL LAXITY IN PATIENTS WITH OSTEOARTHRITISP20RR016458 · NCRR · UNIVERSITY OF DELAWARE · PI SNYDER-MACKLER, LYNN · 2002 to 2011
$18.9M
NMES for Older Individuals After Total Knee ArthroplastyR01HD041055 · NICHD · UNIVERSITY OF DELAWARE · PI SNYDER-MACKLER, LYNN · 2002 to 2006
$1.4M
NCRR NIH HHS P20RR01645NCRR NIH HHS P20 RR016458NICHD NIH HHS R01 HD041055NICHD NIH HHS R01HD041055
6 · The paper itself

Abstract

objectiveWhile joint arthroplasty improves the functional ability of persons with severe knee osteoarthritis (OA), the long-term effects of surgical intervention on body mass have not been evaluated. The objective of this study was to determine if a reduction in body mass index (BMI) was present following unilateral total knee arthroplasty (TKA) compared to an age-matched healthy control group who did not have surgery.

methodOne hundred and six adults with unilateral, end-stage knee OA and thirty-one persons without knee pain participated in the prospective longitudinal study. Subjects with OA underwent primary unilateral TKA and received post-operative out-patient physical therapy. Height, weight, quadriceps strength and self-perceived functional ability were measured at baseline and at a 2-year follow-up.

resultsThere was a significant interaction effect between body mass over time and subject group (P=0.017). BMI showed a significant increase over 2 years for the surgical group (P<0.001), but not for the control group (P=0.842). Sixty-six percent of the persons in the surgical group gained weight over the 2 years with an average weight gain of 6.4 kg, or 14 pounds, 2 years after their initial physical therapy visit. Educational level, marital status, income level and activity level prior to surgery were not related to post-surgical weight gain.

conclusionThe majority of subjects gain weight after surgery and this cannot be attributed to the effects of aging. Weight gain after TKA should be treated as an independent concern and management of orthopedic impairments will not result in weight loss. Post-operative care should include access to nutrition or weight management professionals in addition to medical and physical therapy services.

Indexed as

Arthroplasty, Replacement, KneeWeight GainAgedAged, 80 and overBody Mass IndexFemaleHumansLongitudinal StudiesMaleMiddle AgedMuscle StrengthOsteoarthritis, KneeProspective StudiesQuadriceps MuscleRecovery of FunctionSurveys and Questionnaires

Identifiers

PMID20060949
PMCPMC2846226
OpenAlexW2063183327

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.