J Oral Med Pain.  2025 Dec;50(4):133-138. 10.14476/jomp.2025.50.4.133.

Synovial Chondromatosis of the Temporomandibular Joint Diagnosed by Magnetic Resonance Imaging: A Case Report

• Shin Y
• Chang M
• Ahn HJ
• Park Y
• Kwon JS

• KMID: 2575764
• DOI: http://doi.org/10.14476/jomp.2025.50.4.133

Abstract

Synovial chondromatosis is a rare benign joint condition characterized by the development of metaplastic cartilaginous nodules in the synovium. It primarily affects large joints, such as the knees, elbows, hips, and shoulders, and is uncommon in the temporomandibular joint (TMJ). Symptoms may include swelling in the preauricular area, pain, crepitus (crackling or grating sounds), and limited joint movement. However, these symptoms are also observed in other TMJ disorders, making it important to differentiate synovial chondromatosis from other TMJ disorders. We present a case of synovial chondromatosis that was not detected on cone-beam computed tomography but was successfully identified using magnetic resonance imaging.

Keyword

Chondromatosis, synovial; Joint loose bodies; Magnetic resonance imaging; Temporomandibular joint