What is the function of the retrodiscal tissue in the TMJ?

• A. It acts as a vascularized cushion behind the disc to help with load distribution and disc repositioning during movement.
• B. It forms the primary load-bearing surface of the condyle.
• C. It inhibits disc movement during opening.
• D. It stores calcium for bone remodeling.

Answer: (A)

The retrodiscal tissue acts as a vascularized cushion behind the articular disc, providing elastic support that helps distribute joint loads and guides the disc back toward its normal position during movement. Its elastic, well-supplied nature lets the disc glide smoothly as the mandible opens and closes, absorbing stress and aiding disc repositioning when the jaw moves. It isn’t the main load-bearing surface of the condyle, it doesn’t primarily inhibit disc movement, and it doesn’t store calcium for bone remodeling.