Open-Joint Arthroplasty for Temporomandibular Disorders
Open-joint arthroplasty is surgery to repair, reposition, replace,
or remove parts in a joint. When used to treat
temporomandibular disorder (TMD), this usually
involves the articular disc that cushions the jaw joint.
During open-joint arthroplasty of the jaw, an incision is made in
the skin to expose the jaw joint. The surgeon may repair, reposition, or
replace the disc with your own tissue or an artificial disc. Scar tissue or
bony growths in the jaw joint can also be removed.
Open-joint arthroplasty is done under
general anesthesia. You can normally expect to go home
the same day.
When jaw joint movement cannot be regained because the disc has
changed too much or the joint has broken down, the surgeon may need to remove
the disc (discectomy) and replace it with an artificial disc.
What To Expect After Surgery
After surgery, medicines are prescribed to relieve pain and reduce
You can start physical therapy within 48 hours to maintain movement
and prevent scar tissue from forming.
You may be given a mouthpiece (splint) to wear while rehabilitating
Why It Is Done
Open-joint arthroplasty is used when:
There are bony growths within the jaw joint.
Such growths are hard to reach with
Complications from a
previous surgery occur, such as the failure of an artificial joint
The joint is fused together by bony growth
The joint is not accessible with arthroscopic
How Well It Works
Disc repositioning surgery can relieve pain and improve jaw function. This surgery has good results 80% to 95% of the time.1
Possible complications include:
Loss of jaw movement. Everyone has some
decrease in jaw mobility after surgery, because the jaw heals with scar tissue,
which is harder and tighter than normal tissue. But jaw exercises will help jaw
Adverse reaction to the materials in an artificial disc.
The risk of tissue rejection is higher if artificial materials, rather than
your own tissue, are used.
Tucker MR, et al. (2008). Management of
temporomandibular disorders. In JR Hupp et al., eds., Contemporary Oral and Maxillofacial Surgery, 5th ed., pp.
629–649. St. Louis: Mosby Elsevier.
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