How does fluid build up in the knee? What causes fluid buildup in the knee? The knee joint has the largest amount of synovial membrane in the human body, and knee joint fluid is an autoimmune regulatory protective fluid secreted by the synovial membrane in the knee joint. Under normal circumstances, a small amount of joint fluid (about 5 milliliters) is stored in the knee joint to nourish the articular cartilage, lubricate the joints, reduce friction during joint activities, and continuously circulate and renew the joints during joint activities. When there are lesions in the knee joint or certain systemic diseases, such as trauma, osteophytes, bacterial infections (septic arthritis, joint tuberculosis, etc.), joint degeneration, etc., the joint fluid leakage is greater than the absorption. The exudation of joint fluid is greater than the absorption that is the formation of knee joint effusion, the knee joint cavity pressure increases, resulting in joint pain, swelling and other discomforts, the patient daily activities are limited. Therefore, knee joint effusion is not a disease, but a manifestation of many diseases. Treatment of knee joint effusion Knee joint effusion, if improperly treated and untimely, will not only hinder the patient’s daily life efficiency will also have a certain disability rate, so it is necessary to actively treat. 1, drug treatment Take anti-inflammatory drugs, painkillers, etc. to relieve the symptoms of swelling and pain in the knee joint. 2.Fluid aspiration and puncture treatment When the knee joint has more fluid accumulation and the tension becomes big, joint puncture is carried out to draw out the fluid and blood completely, and sodium hyaluronate, ozone and anti-inflammatory and analgesic drugs are injected into the joint cavity. 3.Surgery When the knee is swollen, the amount of fluid continues to increase, and the amount of fluid is recurring, it is necessary to consider doing blood tests to determine whether the knee joint effusion is caused by a bacterial infection, and then do surgery as soon as possible after the determination. Most knee joint effusions can be relieved by rest and recuperation. Early on, the affected limb can be elevated above the heart to help reduce the swelling, or an elastic bandage can be used to put pressure on the bandage, and weight bearing is prohibited. Knee joint effusion rehabilitation Knee joint effusion treatment can be done during the quadriceps muscle contraction and relaxation activities, and later should strengthen the knee flexion and extension exercises, which has a positive effect on the elimination of joint effusion, to prevent atrophy of the quadriceps muscle, to prevent recurrence, and to restore the function of knee extension and flexion. Daily precautions 1, knee warmth in winter, you can wear knee pads to keep warm, do not blow air conditioning for a long time in the summer, wear long pants or in the knee covered with a blanket to protect the knee joints. 2, less stairs, less climbing climbing stairs when the knee between the patella and femur pressure increases, pain aggravation, so patients with knee joint effusion usually less stairs, not to mention the weight of the stairs, try to take the straight ladder. Traveling patients try not to climb the mountain, to minimize the stimulation and pressure on the knee joint. 3, reduce weight, less weight-bearing weight control in a reasonable range, reduce the pressure on the knee joint, reduce wear and tear. 4, avoid exertion Sedentary people get up and move around every hour or so to increase blood circulation in the legs, and do not stand for a long time. 5, wear a pair of comfortable soft-soled shoes Soft-soled shoes give the ankle joint more firm stability, but also make the knee joint more stable. 6, maintain a healthy life habits Reasonable diet, not excessive alcohol consumption, eat calcium-containing food to supplement calcium, avoid spicy stimulation and cold food. Exercise moderately, not too much.