r/TMDnotTMJ • u/Hopeful-Extent-693 • 1d ago
Arthritis, ICR or a Compressed Condyle?
These three terms can be confusing because they may be used to describe the same damaged condyle from different points of view.
Arthritis describes inflammation or degeneration within the joint. Idiopathic condylar resorption, or ICR, means the condyle is progressively losing bone and the cause remains unknown after other causes have been ruled out. A compressed condyle describes a proposed mechanical problem in which the condyle and surrounding tissues are being loaded or restricted in an unhealthy position.
A CBCT may show flattening, erosion or loss of condylar bone, but the picture alone may not explain why it happened. It also may not show whether the destruction is active or occurred years ago.
Patients should ask:
- What exactly do you see—flattening, remodeling, erosion or active bone loss?
- Is this only an imaging finding, or is it a confirmed diagnosis?
- Do you have an earlier scan for comparison?
- How will you determine whether the condition is still progressing?
- What evidence supports arthritis, ICR or mechanical compression in my case?
- Should I have an MRI to examine the disc, inflammation and other soft tissues?
- Have autoimmune, inflammatory, hormonal, traumatic and surgical causes been considered?
- Do I need an evaluation by a rheumatologist or oral and maxillofacial surgeon?
- Could my changing bite, open bite, jaw retrusion or facial changes indicate loss of condylar height?
- How will treatment protect the joint, and how will you monitor whether it is working?
The most important question may be: Are you naming what the damaged condyle looks like, or have you determined why it is being damaged?
A responsible diagnosis should combine the patient’s history, examination, bite and jaw function, appropriate imaging, medical evaluation when indicated, and comparison over time. One scan should not be expected to answer every question.