Fig. 2: Relationship between key clinical characteristics and MRI findings.

TMD temporomandibular disorder, Chronicity: A chronic state in which TMD symptoms have persisted for more than six months, TMJ temporomandibular joint, ADD anterior disc displacement, TMJ-OA osteoarthritis of the temporomandibular joint. A Correlation between MRI findings across the entire dataset; B Correlation between MRI findings in patients with acute TMD; and C Correlation between MRI findings in patients with chronic TMD. The closer the absolute value of the correlation coefficient is to 1, the stronger the relationship between the two variables. Values near zero indicated little or no correlation. Visualization based on the full dataset (n = 239).