TMJ Surgery: Types of Surgical Treatment, Risks and Recovery

Understanding TMJ Surgery

TMJ surgery is the most invasive treatment option for temporomandibular joint disorders. It is important to understand upfront: the vast majority of people with TMJ disorder — estimated at over 95% — improve with conservative, non-surgical treatment and never need surgery. Surgery is considered only in specific circumstances when other approaches have not been sufficient.

The decision to pursue TMJ surgery should never be taken lightly. It should be made carefully, in consultation with a qualified oral and maxillofacial surgeon, after conservative treatments have been thoroughly tried and a clear structural problem has been identified through imaging.

This article provides an educational overview of TMJ surgery types, when they may be considered, and what to expect. It is not a recommendation for surgery — only a qualified healthcare provider can determine whether surgery is appropriate for your specific situation.

Types of TMJ Surgery

TMJ surgery ranges from minimally invasive procedures to more complex open joint surgery. The types, from least to most invasive, include:

Arthrocentesis: This is the least invasive surgical procedure for the TMJ. It involves inserting needles into the joint space to flush (irrigate) the joint with fluid. This can wash out inflammatory byproducts, reduce pressure, and improve joint mobility. It is sometimes used for acute closed lock (jaw that cannot open fully) that has not responded to other treatment. It is typically performed under local anesthesia or light sedation.

Arthroscopy: This is a minimally invasive procedure in which a small camera (arthroscope) is inserted into the joint through a tiny incision. The surgeon can visualize the joint structures, diagnose problems, and perform treatments such as removing scar tissue, loosening adhesions, or repositioning the disc. It is performed under general anesthesia and typically requires only small incisions.

Open joint surgery (arthrotomy): This is the most invasive type of TMJ surgery, involving a larger incision to directly access the joint. It may be used for complex structural problems, severe arthritis, tumors, or when arthroscopy is not sufficient. Open surgery allows the surgeon to repair or replace joint structures, reposition or remove the disc, or address bone problems. It requires general anesthesia and involves a longer recovery.

Total joint replacement: In rare cases of severe joint destruction, the entire TMJ may be replaced with a prosthetic joint. This is a major surgery reserved for the most severe cases, such as advanced arthritis, multiple failed surgeries, or severe joint damage from disease.

When Surgery Is Considered

TMJ surgery is typically considered only when all of the following conditions are met:

• •Conservative treatment has been thoroughly tried for an adequate period (usually several months) without sufficient improvement
• •Symptoms are severe, persistent, and significantly affecting quality of life
• •A specific structural problem has been identified through imaging (MRI, CT)
• •The structural problem can potentially be addressed by surgery
• •The potential benefits of surgery outweigh the risks
• •The patient is in good enough health to undergo surgery

Conditions that may lead to surgical consideration include severe disc displacement that has not responded to conservative treatment, significant joint degeneration from arthritis, joint ankylosis (fusion of the joint), recurrent jaw locking that significantly limits function, and structural abnormalities of the joint.

Even when these conditions are present, surgery is not always the best option. The decision should involve careful consideration of the potential benefits, risks, alternatives, and the patient's individual circumstances.

Risks of TMJ Surgery

All surgical procedures carry risks, and TMJ surgery is no exception. The specific risks vary depending on the type of procedure, but may include:

• •Infection at the surgical site
• •Bleeding or hematoma
• •Nerve injury — potentially causing numbness, tingling, or weakness in the face
• •Facial nerve injury — potentially affecting facial movement
• •Ear problems — including hearing changes or ear fullness, due to the proximity of the ear canal
• •Scarring
• •Worsening of symptoms or failure to improve
• •Need for additional surgery
• •Anesthesia risks
• •Temporomandibular joint damage or changes in bite
• •For open joint surgery: more significant risks including joint damage and longer recovery

The risks increase with the invasiveness of the procedure. Arthrocentesis has the lowest risk profile, while open joint surgery and total joint replacement carry the highest risks. Discuss all potential risks with your surgeon before making a decision.

It is also important to understand that TMJ surgery does not always resolve symptoms. Some people do not experience improvement after surgery, and in rare cases, symptoms may worsen. This is why surgery should be considered carefully and only when the potential benefits clearly outweigh the risks.

Recovery After TMJ Surgery

Recovery from TMJ surgery depends on the type of procedure:

Arthrocentesis: Recovery is typically quick. You may experience mild swelling and discomfort for a few days. Most people return to normal activities within 1-2 days. Jaw exercises are usually started shortly after the procedure.

Arthroscopy: Recovery takes 1-2 weeks. You may have swelling, discomfort, and limited jaw movement initially. A soft diet is recommended during the first week. Jaw exercises are typically started within a few days to restore mobility.

Open joint surgery: Recovery takes several weeks to months. You will have more significant swelling, discomfort, and limited jaw movement. A soft or liquid diet may be needed for several weeks. Physical therapy for jaw rehabilitation is typically required. Full recovery can take 2-3 months or longer.

Total joint replacement: Recovery is the longest, potentially taking 3-6 months or more. Extensive rehabilitation and physical therapy are required.

After any TMJ surgery, follow your surgeon's post-operative instructions carefully. This includes diet restrictions, jaw exercises, wound care, activity restrictions, and follow-up appointments. Proper post-operative care is essential for a good outcome.