TMJ Arthroscopy Scar: Port Sites and Healing
Edited by Merve Aydin, Health Content Editor · About 6 min read · General information, not medical advice
Quick answer
A TMJ arthroscopy scar is the small mark left at each portal where a surgeon passes a camera and instruments into the jaw joint. AAOMS describes arthroscopy as a minimally invasive operation, and the portals are usually only a few millimetres wide, so most heal like a firm spot rather than a long incision. NIDCR notes that joint surgery is reserved for selected cases after conservative care, which is why scar questions tend to come up after a diagnosis is confirmed rather than before.
Where the port sites sit
The portals are placed in the skin over the joint, just in front of the ear. Surgeons usually work within the preauricular crease, the natural fold between the cheek and the ear, or slightly behind it near the tragus. One portal carries the arthroscope; a second and sometimes a third allow instruments and fluid to pass. Because the skin here is thin and moves with the jaw, the marks tend to sit in a place that is partly hidden by the ear itself.
Most people need two or three punctures for a single joint. The exact number depends on what the surgeon plans to do: washing out the joint needs less access than removing adhesions or repositioning a disc. Your operative note should list the number and location of portals, and it is worth asking for that detail if you are curious about what to expect.
How the punctures heal
These are puncture wounds, not cuts, so the timeline is shorter than a typical surgical scar. Healing still happens in stages, and the visible mark changes for months after the skin has closed.
| Stage | What you may see | What is normal |
|---|---|---|
| First 48 hours | Small adhesive strips or a single suture, mild swelling, pinkness | Clear fluid or a little blood on the dressing |
| Days 3 to 7 | Edges closed, tenderness, slight bruising | A raised, firm bump at each portal |
| Weeks 2 to 6 | Red or pink marks, tightening when you open wide | Itching and mild sensitivity to touch |
| Months 3 to 12 | Colour fades toward skin tone, bump softens | A pale, slightly indented dot that is hard to see |
AAOMS notes that arthroscopy generally involves less tissue trauma and a quicker recovery than open joint surgery. That is reflected in the scar: there is no long incision to heal, and the small openings usually close within a week or two. The deeper tissue still needs time, which is why the area can feel lumpy for several weeks even when the surface looks fine.
Scar care that helps
Keep the portals clean and dry for the first day or two, then follow your surgeon's instructions on washing. Pat the area dry instead of rubbing it. Do not pick at a scab or squeeze a small collection of fluid; both invite infection and make the final mark more noticeable.
Once the surgeon confirms the skin is closed, gentle massage can soften the firm tissue underneath. Use a clean fingertip and light pressure in small circles for a minute or two, once or twice a day. Silicone gel or sheeting is often used on larger scars, but the evidence for small puncture sites is limited, and it should only be started after the wound is fully closed.
Sun protection matters more than most people expect. New scar tissue can darken with ultraviolet exposure, so cover the area with a hat or sunscreen once it has healed. Avoid harsh scrubs, alcohol-based toners, and heat packs directly over the portals.
What can change the final scar
Skin type is the largest factor. People with a history of raised or spreading scars are more likely to form one at a portal, even a small one. The number of portals, a revision operation through the same site, and any post-operative infection also affect how the mark settles.
Surgeons try to place portals in creases and away from areas where glasses or hair tug at the skin. If a portal does widen, it can usually be revised later, but most do not need anything beyond time. A pale dot in front of the ear is a common and unremarkable result.
When to call your surgeon
Contact the surgical team if the area becomes increasingly painful, hot, or swollen after the first few days, or if redness spreads beyond the portal. Fever, pus, a wound that opens, or fluid that keeps leaking are reasons to call promptly. Numbness that does not improve, or a spot that becomes hard and painful months later, also deserves a review.
To place this in context, read about TMJ arthroscopy surgery and what success rates do and do not tell you. If you are comparing operations, the guide to TMJ surgery recovery covers the wider timeline, and TMJ surgery scars explains how open procedures differ.
Frequently Asked Questions
How big is a TMJ arthroscopy scar?
Most portals are only a few millimetres across, roughly the size of a grain of rice. Once healed, they often look like a small dimple or a pale freckle in front of the ear.
Will the scar be visible?
Usually not much. Portals are placed in the fold beside the ear, and the mark fades over several months. Short hair, glasses, and the curve of the ear hide most of them.
How long does a portal take to heal?
The skin surface normally closes within one to two weeks. The tissue underneath continues to soften and remodel for six to twelve months, so a firm bump early on is expected.
Can I wear makeup over the portals?
Ask your surgeon before applying anything. Most allow makeup once the skin is fully closed and there is no drainage, which is often around one week.
Does a visible scar mean the surgery did not work?
No. Scar appearance reflects skin healing, not the condition of the joint. Pain and jaw function are the measures that matter, and they are assessed separately.
Can silicone gel improve a small arthroscopy scar?
Silicone can help some scars flatten and fade, but evidence for tiny puncture sites is limited. It is reasonable to try once the wound is closed, as long as your surgeon agrees.
References
- TMD — National Institute of Dental and Craniofacial Research — NIDCR
- TMJ disorders — Mayo Clinic — Mayo Clinic
- Temporomandibular Disorders — American Dental Association — ADA
- American Academy of Orofacial Pain — AAOP
- American Association of Oral and Maxillofacial Surgeons — AAOMS
Medical disclaimer
This page is for general education and is not medical advice. It does not replace an exam by a dentist, physician, or other qualified clinician.
Reviewed by the tmjspecialistguide.com editorial team · Last updated 2026-11-07.