Association between osseous changes of the condyle and temporomandibular joint (TMJ) fluid in osteoarthritis

作者：Otonari Yamamoto Mika^*; Sano Tsukasa; Okano Tomohiro; Wakoh Mamoru

来源：Oral Radiology, 2015, 31(1): 41-48.

DOI：10.1007/s11282-014-0185-1

• Temporomandibular joint
• MRI
• Joint fluid
• Osteoarthritis
• Pain

Our previous study showed that the temporomandibular joint (TMJ) with disk displacement without reduction had the largest amount of TMJ fluid and revealed a correlation between the amount of fluid and pain. However, the amount of TMJ fluid in joints with osteoarthritis was not the largest, despite representing the last stage of internal derangement. The reason could be the presence of different types of pathologic conditions in osteoarthritis. Each type of osseous change could be associated with a characteristic pathosis that influences the amount of fluid. The purpose of this study was to analyze the correlation between osseous changes and TMJ fluid in joints with osteoarthritis.
The study evaluated 57 joints in 39 patients diagnosed with osteoarthritis on magnetic resonance images. The grading system of Larheim et al. was used to categorize the amounts of TMJ fluid. Osseous changes were divided into four groups on proton density-weighted images: erosion, marginal proliferation, deformity, and erosion and marginal proliferation.
There were significant differences in the amounts of fluid among the four osseous change groups (P = 0.0001). The erosion group showed the largest amount of fluid among the groups (P < 0.01). There were significant differences in the amounts of fluid between painful and non-painful joints in the erosion, marginal proliferation, and deformity groups (P < 0.001).
The types of osseous changes appeared to be associated with the TMJ fluid amounts in joints with osteoarthritis. There was an association between TMJ fluid and pain in some osseous groups.

• 出版日期2015-1