TMJ SURGERY PROCEDURE

TMJ Surgery Procedure: What to Expect

TMJ surgery is a group of surgical procedures used to treat disorders of the temporomandibular joint — the hinge joint connecting the lower jaw (mandible) to the skull just in front of each ear. When conservative treatments like splints, physical therapy, medications, and Botox injections fail to resolve chronic jaw pain, locking, limited opening, or joint deterioration, surgery may be the most effective path to lasting relief.

At Lake Norman Oral & Facial Surgery, Dr. Raymond J. Haigney II — a double board-certified oral and maxillofacial surgeon — evaluates and treats the full spectrum of TMJ disorders, from minimally invasive joint lavage to open joint reconstruction.

When Is TMJ Surgery Necessary?

Surgery is typically considered after 3–6 months of conservative treatment has failed. Specific indications include:

• Internal derangement — the articular disc (cartilage cushion) is displaced, causing clicking, popping, or locking. When the disc is permanently displaced ("closed lock"), the jaw may open only 25–30mm (normal is 40–50mm).
• Degenerative joint disease (osteoarthritis) — progressive breakdown of the condylar cartilage and bone surfaces, causing chronic pain, crepitus (grinding sensation), and reduced function
• Ankylosis — bony or fibrous fusion of the joint, severely restricting or completely eliminating jaw movement
• Condylar fractures — fractures of the jaw joint from trauma that fail to heal properly or cause malocclusion
• Tumors or growths — synovial chondromatosis, osteochondroma, or other pathology affecting the joint

Types of TMJ Surgery

Arthrocentesis (Least Invasive)

A joint lavage procedure performed under IV sedation. Two needles are inserted into the joint space — one to infuse sterile saline, one to drain. The fluid flushes out inflammatory debris, adhesions, and degradation byproducts. Often combined with a corticosteroid or hyaluronic acid injection. Procedure time: 20–30 minutes. Success rate for closed lock: 70–80%. Recovery: 2–3 days of mild soreness.

Arthroscopy (Minimally Invasive)

A small camera (arthroscope, 1.8–2.4mm diameter) is inserted through a tiny incision in front of the ear, allowing the surgeon to visualize the joint interior on a monitor. Surgical instruments inserted through a second portal can:

• Lyse (break up) adhesions restricting disc movement
• Lavage the joint
• Reposition or suture a displaced disc
• Smooth irregular bone surfaces (debridement)
• Inject medications directly under visualization

Procedure time: 30–60 minutes. Recovery: 1–2 weeks. Success rate: 80–90% for appropriate indications. Scarring is minimal (5mm incision).

Open Joint Surgery (Arthroplasty)

Reserved for complex cases — severe disc damage, ankylosis, tumors, failed prior surgery. A 3–5cm incision is made in front of the ear (in a natural skin crease), and the joint is fully opened for direct access. Procedures include:

• Discectomy — removal of a severely damaged disc that cannot be repositioned. The joint often remodels successfully without the disc, or a graft (temporalis fascia, dermis, or alloplastic material) is placed as a replacement.
• Disc repair/plication — suturing and reshaping a stretched or torn disc back to proper position
• Condylectomy — reshaping or partial removal of the condyle (ball of the joint) in cases of overgrowth or severe degeneration
• Gap arthroplasty — removing bony ankylosis to restore jaw opening, followed by aggressive physiotherapy
• Total joint replacement — for end-stage joint disease, a custom-manufactured prosthetic joint (titanium fossa component + condylar prosthesis) replaces the entire TMJ. These devices are manufactured patient-specifically using 3D CT data.

Recovery: 2–6 weeks depending on procedure complexity. Aggressive physical therapy and jaw exercises begin within days to prevent re-ankylosis.

Recovery & Rehabilitation

Post-surgical rehabilitation is critical to outcomes. Key recovery elements:

• Diet: liquid diet for 1–2 weeks, progressing to soft foods over 4–6 weeks. Full diet by 8–12 weeks for open surgery.
• Physical therapy: passive and active jaw exercises begin 2–7 days after surgery. A physical therapist or the surgeon guides range-of-motion exercises. Consistency is essential — especially after ankylosis release.
• Pain management: prescription pain medication for 5–7 days, then transition to over-the-counter (ibuprofen, acetaminophen). Ice packs for the first 48 hours.
• Activity restrictions: no heavy lifting or contact sports for 4–6 weeks. Return to desk work in 1–2 weeks (arthroscopy) or 2–3 weeks (open surgery).

Risks & Outcomes

TMJ surgery risks include facial nerve injury (usually temporary, 1–3% for open surgery), infection, bleeding, malocclusion changes, persistent pain, and the need for revision surgery. Arthrocentesis and arthroscopy carry significantly lower risk profiles than open procedures. Overall patient satisfaction rates for TMJ surgery range from 75–90% depending on procedure type and patient selection.

More on TMJ Surgery – Corrective Jaw Surgery