Function of articular disc is/are:
**Core Concept**
The articular disc, also known as the meniscus, is a fibrocartilaginous structure located between the articulating surfaces of bones in the joint. Its primary function is to provide cushioning, support, and stability to the joint, facilitating smooth movement and reducing friction between the bones.
**Why the Correct Answer is Right**
The articular disc functions to absorb shock and distribute pressure evenly across the joint, thereby reducing the stress on the articulating surfaces. This is achieved through its unique composition, which includes a dense network of collagen fibers and a loose matrix of proteoglycans. The disc also plays a crucial role in maintaining joint stability by providing a mechanical barrier between the bones and preventing excessive movement or displacement.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the articular disc does not primarily function as a ligament, which is a fibrous connective tissue that connects bones to each other and provides additional stability to the joint.
**Option B:** This option is incorrect because the synovial membrane, not the articular disc, is responsible for producing synovial fluid, which lubricates the joint and reduces friction between the articulating surfaces.
**Option C:** This option is incorrect because the articular disc does not primarily function as a tendon, which is a fibrous connective tissue that connects muscles to bones and transmits forces generated by muscle contractions.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the articular disc is a common site for injuries, particularly in the knee joint. Meniscal tears can occur due to acute trauma or repetitive stress, leading to pain, stiffness, and limited mobility.
**Correct Answer: C. To provide cushioning, support, and stability to the joint.**