Biology
Articular Cartilage Composition
Quick fact
Articular cartilage is composed of about 80% water and 20% collagen and other proteins.
Why this is interesting
Did you know your joints are protected by a soft, slippery tissue that allows for smooth movement without pain?
Read the full explanation
Understanding Articular Cartilage Composition
Imagine the surface of a joint as a smooth, rubbery layer. This layer, called articular cartilage, acts like a cushion between bones. It's made mostly of water, which gives it flexibility, and strong collagen fibers that provide structure. The combination allows your joints to move smoothly without friction or damage.
A deeper explanation
Articular cartilage is primarily composed of water (about 80%) and a complex matrix of collagen fibers and proteoglycans like hyaluronic acid. These components work together: the water provides shock absorption, while collagen gives strength and resilience. Chondrocytes, the cells within the cartilage, maintain this structure by producing and repairing the extracellular matrix. This unique composition allows articular cartilage to withstand high pressures in joints during movement.