[Evaluation of magnetic resonance imaging in the diagnosis of temporomandibular degenerative joint disease].

PURPOSE: To evaluate the ability of magnetic resonance imaging(MRI) in diagnosis of degenerative joint disease (DJD).

METHODS

A total of 152 patients with temporomandibular joint disorder(TMD) from June 2019 to June 2021 were included. A total of 304 temporomandibular joints(TMJs) were examined both by cone-beam CT (CBCT) and MRI. The sensitivity, specificity and accuracy of MRI for nine types of TMJ abnormalities were calculated with CBCT as gold standard.

RESULTS

The sensitivity of MRI for condylar surface erosion, condylar osteophyte formation, condylar osteosclerosis, subcortical cystic degeneration, condylar flattening, fossa bone erosion or sclerosis, fossa bone absorption or proliferation, joint space reduction or fusion, and joint space increase, was 95.9%, 81.0%, 49.2%, 81.3%, 98.1%, 76.7%, 84.4%, 52.8%, and 29.4% respectively. The specificity was 49.4%, 80.8%, 83.7%, 85.3%, 52.5%, 77.5%, 78.1%, 88.4% and 98.3%, respectively. The accuracy was 83.2%, 80.9%, 69.4%, 84.9%, 92.1%, 77.3%, 82.2%, 76.0% and 94.4% respectively.

CONCLUSIONS

MRI has high accuracy in the diagnosis of nine types of TMJ bone abnormalities. MRI is suitable for imaging screening and diagnosis of DJD.