MRI TMJs (Anatomy & Pathology) - Video Lesson

Hey, everyone. Welcome to today's lesson on the MRI of the temporomandibular joint. In this lesson, we will look at some anatomy and common patient indications for these scans. Let's get started. The key structures in the temporomandibular joint include the mandibular condyle, mandibular fossa, articular tubercle, and articular disc. There are small ligaments associated with the position of the articular disc. However, these are difficult to see on an MRI due to their small size. All of these structures work together with muscular structures to facilitate movement. The main important plane of imaging for a TMJ study is a sagittal view showing the joint in profile. Let's take a look at a sagittal closed mouth image. In the anterior portion of the joint, the articular tubercle or eminence is demonstrated. This is part of the temporal bone of the skull. This structure helps guide the movement of the mandible.