The granuLomatous tissue that is responsible for destruction of articular surfaces of TMJ in rheumatoid arthritis is known as
**Core Concept**
Rheumatoid arthritis (RA) is a chronic autoimmune disorder characterized by inflammation and destruction of joints, including the temporomandibular joint (TMJ). In RA, the immune system attacks the lining of the joint (synovium), leading to granulomatous inflammation and subsequent damage to the articular surfaces.
**Why the Correct Answer is Right**
The correct answer is associated with the granulomatous inflammation seen in RA. In the TMJ, this inflammation leads to pannus formation, a type of granulation tissue that invades the joint space and causes destruction of the articular cartilage and bone. The synovial lining of the TMJ becomes hyperplastic and infiltrated with inflammatory cells, including lymphocytes and plasma cells, which produce cytokines and other inflammatory mediators that contribute to joint damage.
**Why Each Wrong Option is Incorrect**
**Option A:** This is not a known type of granulomatous tissue associated with RA or TMJ destruction.
**Option B:** This option does not relate to RA or TMJ pathology.
**Option C:** This is a different type of granulomatous tissue associated with Crohn's disease, not RA.
**Clinical Pearl / High-Yield Fact**
In RA, the destruction of the TMJ can lead to limited mouth opening, pain on jaw movement, and difficulties with chewing and speaking. Early recognition and treatment of RA are essential to prevent joint damage and preserve function.
**Correct Answer: C. Bursitis.**