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Symptom

A symptom is a discomforture felt by the patient - for example pain, giving way, catching.

Syndrome

A syndrome is a collection of signs and symptoms often found in association with one another.

Synovectomy

Synovectomy is a surgical procedure to remove excessive joint lining (synovium). Page updated March 2024 by Dr Sheila Strover (Clinical Editor)

Synovial chondromatosis

Synovial chondromatosis is a rare disorder where the joint lining (synovium) proliferates and produces a benign proliferation of synovial tissue and bits of cartilage.

Synovial fluid

Synovial fluid is the fluid lubricating the inside of any synovial joint, and it is secreted by the synovium (the cells of the joint lining).

Synovial joint

Synovial joints are movable joints that contain a lubricating fluid called synovial fluid and have articular cartilage to keep the ends of the moving bones separate from each other.

Synovial membrane

The synovial membrane is the cellular lining around the inside of lubricated joints.

Synovial plica

A synovial plica is an infold of the joint lining or synovium - it is a normal anatomical structure but can sometimes become problematic.

Synovitis

Synovitis is inflammation of the joint lining (synovium).

Synovium

The synovium is the cell layer that constitutes the inner lining of the knee joint and other joints.