Patellar skin surface temperature by thermography reflects knee osteoarthritis severity.

dc.contributor.author

Denoble, Anna E

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Hall, Norine

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Pieper, Carl F

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Kraus, Virginia B

dc.coverage.spatial

United States

dc.date.accessioned

2015-11-10T22:27:43Z

dc.date.issued

2010-10-15

dc.description.abstract

BACKGROUND: Digital infrared thermal imaging is a means of measuring the heat radiated from the skin surface. Our goal was to develop and assess the reproducibility of serial infrared measurements of the knee and to assess the association of knee temperature by region of interest with radiographic severity of knee Osteoarthritis (rOA). METHODS: A total of 30 women (15 Cases with symptomatic knee OA and 15 age-matched Controls without knee pain or knee OA) participated in this study. Infrared imaging was performed with a Meditherm Med2000™ Pro infrared camera. The reproducibility of infrared imaging of the knee was evaluated through determination of intraclass correlation coefficients (ICCs) for temperature measurements from two images performed 6 months apart in Controls whose knee status was not expected to change. The average cutaneous temperature for each of five knee regions of interest was extracted using WinTes software. Knee x-rays were scored for severity of rOA based on the global Kellgren-Lawrence grading scale. RESULTS: The knee infrared thermal imaging procedure used here demonstrated long-term reproducibility with high ICCs (0.50-0.72 for the various regions of interest) in Controls. Cutaneous temperature of the patella (knee cap) yielded a significant correlation with severity of knee rOA (R = 0.594, P = 0.02). CONCLUSION: The skin temperature of the patellar region correlated with x-ray severity of knee OA. This method of infrared knee imaging is reliable and as an objective measure of a sign of inflammation, temperature, indicates an interrelationship of inflammation and structural knee rOA damage.

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/21151853

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1179-5441

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https://hdl.handle.net/10161/10864

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eng

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SAGE Publications

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Clin Med Insights Arthritis Musculoskelet Disord

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10.4137/CMAMD.S5916

dc.subject

inflammation

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infrared imaging

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knee

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osteoarthritis

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thermography

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Patellar skin surface temperature by thermography reflects knee osteoarthritis severity.

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Journal article

duke.contributor.orcid

Pieper, Carl F|0000-0003-4809-1725

duke.contributor.orcid

Kraus, Virginia B|0000-0001-8173-8258

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/21151853

pubs.begin-page

69

pubs.end-page

75

pubs.organisational-group

Basic Science Departments

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Biostatistics & Bioinformatics

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Clinical Science Departments

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Duke

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Duke Molecular Physiology Institute

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Institutes and Centers

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Medicine

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Medicine, Rheumatology and Immunology

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Orthopaedics

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Pathology

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School of Medicine

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Published online

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3

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