Total Joint Replacement System
'TMJ' System
The Total Mandibular Joint Replacement System from Zimmer Biomet is a temporomandibular joint prosthesis, and a FDA approved stock joint.
The TMJ System is implanted in the jaw to functionally reconstruct a diseased and/or damaged temporomandibular joint.
The Total TMJ Replacement System is a two-component system comprised of mandibular condyle and glenoid fossa components.
Both components are available in multiple sizes as right and left side specific designs.
Mandibular Component—Cobalt-Chromium-Molybdenum (Co-CrMo) alloy with titanium alloy coating or Titanium (Ti-6Al-4V) alloy with titanium alloy coating.
Both components are attached to the bone by screws.
Fossa Component—ultra high molecular weight polyethylene (UHMWPE).
The Total TMJ Replacement System was used in a ten (10) year clinical trial from 1995 to 2005.
A clinical trial was conducted on 442 Zimmer Biomet TMJ replacements in 288 cases. At landmark intervals, the patients were evaluated for pain, interference with eating, and maximal incisal opening.
The study showed that there were no device-related mechanical failures and that there were statistically significant improvements in pain level, interference with eating, and incisal opening.
The study supports the conclusion that Zimmer Biomet stock TMJ replacements are a safe and effective option when temporomandibular joint reconstruction is needed.
Giannakopoulos DDS MD et al. “Biomet Microfixation Temporomandibular Joint Replacement System: A 3-Year Follow-Up Study of Patients Treated During 1995 to 2005”. American Association of Oral and Maxillofacial Surgeons, J Oral Maxillofac Surg70 (2012): 787-794.
Indications
The Total Temporomandibular Joint Replacement System is indicated for reconstruction of the temporomandibular joint. The reconstruction is necessary due to one of the following diagnoses:
Arthritic conditions: osteoarthritis, traumatic arthritis, rheumatoid arthritis
Ankylosis, including but not limited to, recurrent ankylosis with excessive heterotopic bone formation
Revision procedures where other treatments have failed (e.g. alloplastic reconstruction, autogenous grafts)
Avascular necrosis
Multiply operated joints
Fracture
Functional deformity
Benign neoplasms
Malignancy (e.g. post-tumor excision)
Degenerated or resorbed joints with severe anatomic discrepancies
Developmental abnormality
Product images
Featuring the TMJ Joint and in surgery images.
