Liigesõõnsused

Liigesõõnsused, also known as joint cavities or synovial cavities, are the spaces within synovial joints that are filled with synovial fluid. These cavities are crucial for the smooth and frictionless movement of bones that articulate with each other. The synovial membrane, a specialized connective tissue, lines the inner surface of the joint capsule and secretes the synovial fluid. This fluid acts as a lubricant, reducing friction between the articular cartilages that cover the ends of the bones. It also provides nourishment to the cartilage, which lacks its own blood supply.

The presence and integrity of the liigesõõnsused are essential for joint health and function. Conditions affecting these cavities can lead to pain, stiffness, and limited mobility. For instance, inflammation of the synovial membrane, known as synovitis, can cause excess fluid accumulation and swelling within the joint cavity, leading to discomfort. Trauma or disease can also damage the articular cartilage or the synovial membrane, compromising the lubrication and cushioning functions of the liigesõõnsus. Diagnosis and treatment of joint problems often involve assessing the state of the liigesõõnsused and the synovial fluid within them.