What is disc displacement of the TMJ?

Disc displacement of the temporomandibular joint (TMJ) occurs when the articular disc, which is a cushioning structure between the mandible (lower jaw) and the temporal bone of the skull, moves out of its normal position. This can lead to pain, clicking or popping sounds when moving the jaw, limited range of motion, and difficulty chewing. Disc displacement can be caused by trauma, arthritis, or muscle imbalances, among other factors. Treatment may include physical therapy, medications, or in severe cases, surgery.

Disc displacement of the temporomandibular joint (TMJ) is a condition in which the disc of the TMJ moves out of its normal position. The disc is located between the ball (condyle) of the lower jawbone (mandible) and the socket (glenoid fossa) of the skull. It acts as a shock absorber and helps to guide the movement of the jaw.

When the disc is displaced, it can cause pain, clicking, popping, or locking of the jaw. It can also lead to difficulty opening or closing the mouth.

Disc displacement can be caused by a variety of factors, including:

- Trauma to the jaw
- Arthritis
- Certain jaw movements (such as yawning or chewing)
- Bruxism (grinding or clenching of the teeth)
- Hyperlaxity (loose ligaments)

Treatment for disc displacement depends on the severity of the condition. In some cases, simple measures such as rest, ice, and pain medication may be enough to relieve symptoms. In other cases, more aggressive treatment, such as surgery, may be necessary.