An expert overview into arthroscopy for TMJ
Temporomandibular joint (TMJ) disorders affect the joint that connects the jawbone to the skull, often leading to pain, clicking, restricted jaw movement or difficulty chewing. In cases where conservative treatments such as physiotherapy, splints or medication are not effective, TMJ arthroscopy may be recommended as a minimally invasive surgical option.
What is TMJ arthroscopy?
TMJ arthroscopy is a keyhole surgical technique used to diagnose and treat disorders of the temporomandibular joint. The procedure involves inserting a small camera (arthroscope) and fine instruments into the joint space through tiny incisions in front of the ear. This allows the specialist to view the internal structures of the joint and perform corrective treatments if needed.
It’s both a diagnostic and therapeutic tool. The surgeon can visualise inflammation, adhesions, cartilage damage or disc problems and treat them during the same procedure.
When is arthroscopy used to treat TMJ disorders?
TMJ arthroscopy may be recommended when symptoms do not respond to non-surgical treatments. These include:
- Persistent jaw pain or tenderness
- Joint locking or stiffness
- Limited range of motion
- Clicking, popping or grinding sounds
- Swelling or recurrent inflammation
Internal derangement, synovitis, and degenerative joint disease are the most common reasons to have an arthroscopy.
What happens during the procedure?
TMJ arthroscopy is usually performed under general anaesthetic and typically takes between 30 minutes to an hour. The procedure involves:
- Making a small incision near the ear
- Inserting the arthroscope to inspect the joint
- Introducing instruments to irrigate the joint, remove adhesions, or reposition the disc
- Closing the incisions with stitches
Because it’s minimally invasive, there is typically less tissue trauma than with open-joint surgery.
What are the benefits of TMJ arthroscopy?
TMJ arthroscopy offers a range of advantages:
- Minimally invasive: Smaller incisions and less post-operative discomfort
- Shorter recovery time: Most patients can return to normal activities sooner than with open surgery
- Reduced scarring and complications
- Improved joint function and pain relief
- Accurate diagnosis: Direct visualisation of joint structures for clearer understanding of the problem
What should patients expect after surgery?
Following TMJ arthroscopy, mild swelling and soreness are normal but usually settle within a few days. Patients are often advised to:
- Follow a soft diet temporarily
- Use prescribed pain relief and anti-inflammatory medication
- Begin gentle jaw exercises under guidance
- Avoid wide mouth opening or chewing tough foods in the early weeks
Recovery time varies, but many patients notice a gradual improvement in symptoms over several weeks.
Are there any risks?
While complications are rare, as with any procedure there are potential risks including bleeding, infection, nerve injury, or limited jaw movement. Choosing an experienced oral and maxillofacial surgeon with expertise in TMJ arthroscopy helps reduce these risks.