Patients who received TMJ systems from the IDE study

Inclusion Criteria:

1. Patients requiring total joint reconstruction due to:

   Arthritis (osteo-, rheumatoid, traumatic) malignancy Ankylosis functional deformity Avascular necrosis revisions Benign neoplasms fracture Multiple operated joints

2. Patients who are skeletally mature.

3. Patients must have at least one of the following criteria for surgical TMJ treatment.

   1. Presence of considerable pain and/or limited function in the joint area.
   2. Clinical and imaging evidence consistent with anatomic joint pathology
   3. Previous failure of non-surgical treatment/therapy or a failed implant.
   4. High probability of patient improvement by surgical treatment.
4. Patients must be able to return for follow-up examinations.
5. Patients without serious compromising general medical conditions.

Exclusion Criteria:

1. Patients with active infection.
2. Patient conditions where there is insufficient quantity or quality of bone to support the device
3. Patients with perforations in the mandibular fossa and/or bony deficiencies in the articular eminence compromising support for the artificial fossa component.
4. Patients with mandibular and/or zygomatic arch screw holes compromising component fixation
5. Patients requiring partial joint reconstruction or other TMJ procedures not listed as an indication.
6. Patients who are NOT skeletally mature.
7. Patients who are incapable or unwilling to follow postoperative care instructions.
8. Patients who are unable to return for follow-up examinations.
9. Patients with severe hyper-functional habits
10. Patients on chronic steroid therapy.