What is Vacuum Phenomenon? Exploring the Science Behind this Mysterious Occurrence.
Vacuum phenomenon refers to the presence of gas-filled cavities or bubbles within a joint space, usually the knee, which can be visualized on an x-ray. These bubbles result from a sudden drop in pressure within the joint, typically during movement, which causes dissolved gases in the synovial fluid to form into a gas-filled cavity. The vacuum phenomenon is not necessarily harmful, but it can be a sign of joint degeneration and arthritis.