ArticleArchives of rheumatology2024
A comparison of thermal characteristics of the small joints of the hands between patients with rheumatoid arthritis and healthy controls.
Article in Archives of rheumatology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objectives: This study aims to investigate the thermal characteristics of the small joints of the hands between patients with rheumatoid arthritis (RA) and healthy controls. Patients and methods: Between December 2020 and May 2021, a total of 52 RA patients (9 males, 43 females; mean age: 52.1±11.1 years; range, 38 to 68 years) who met the revised American College of Rheumatology and European League Against Rheumatism (ACR/EULAR) classification criteria and 26 healthy controls (10 males, 16 females; mean age: 51.2±8.2 years; range, 38 to 68 years) were included. Joint tenderness was evaluated using Ritchie articular index (RAI). Joint tenderness was scored from 0 to 3. Thermal data were collected from the hand regions of individuals. A FLIR T450sc microbolometer infrared thermal camera with 320×240 resolution was used for the thermography of individuals. Bilaterally proximal interphalangeal joints (1-5) and metacarpophalangeal joints (1-5) were evaluated. The mean temperature was compared between the patients and healthy controls. Results: The mean disease duration of patients with RA was 10.4±8.9 years. The mean temperature values of the joints in the patients with a RA RAI score of 0, 1, 2, 3 were 32.43±1.59°C; 32.71±1.36°C; 33.12±1.23°C; 33.60±0.99°C, respectively. The mean temperature was 31.14±1.51°C in healthy controls. The mean temperature values of the joints in the RA patients with RAI score of 0 was higher compared to healthy controls (p<0.05). Patients with a Ritchie sensitivity score of 1 had a higher mean temperature compared to patients with score of 0 (p<0.05). In RA patients, the joints with a RAI score of 1 had higher mean temperature values than the joints with RAI score of 0 (p<0.05). The mean temperature values of the joints with RAI score of 2 were also higher than the joints with RAI score of 1 (p<0.05). Conclusion: Our study results suggest that thermal imaging may be an objective tool for diagnosis and assessing disease activity in RA.
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