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Temporomandibular (TM) joint

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Temporomandibular (TM) joint

The temporomandibular (TM) joints join the skull and lower jawbone. These gliding "ball and socket" joints are located just in front of each ear. They move when a person opens and closes his or her mouth.

The TM joints are stabilized by muscles and ligaments that attach directly to the jawbone. They are separated by a disc made of cartilage, called the articular disc. This keeps the two bones from rubbing together.

Current as of: March 25, 2020

Author: Healthwise Staff
Medical Review: Adam Husney, MD - Family Medicine
Martin J. Gabica, MD - Family Medicine

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