Knee aspiration, also known as joint aspiration or arthrocentesis, is a medical procedure used to remove excess fluid from the knee joint using a sterile needle. This fluid buildup can occur due to conditions such as knee injury, arthritis, infection, gout, or inflammation. The procedure is both diagnostic and therapeutic, meaning it helps doctors identify the cause of knee swelling and also provides relief from pain and stiffness.
Doctors often recommend knee aspiration when a patient experiences persistent knee swelling, limited movement, or unexplained pain. By analyzing the removed fluid, healthcare professionals can check for infection, crystals (as seen in gout), blood, or signs of inflammatory diseases. In many cases, removing the fluid reduces pressure inside the joint, leading to immediate improvement in comfort and mobility.
Knee aspiration is usually performed in a clinic or hospital setting and takes only a few minutes. It is generally safe, with minimal risks when done under proper sterile conditions. Some patients may feel mild discomfort, but serious complications are rare.
Overall, knee aspiration is a valuable procedure that helps in accurate diagnosis and effective management of knee joint problems, especially when swelling and pain do not improve with rest or medication alone.