Knee joint effusion

Introduction Synovitis is a common clinical disease, and the main symptom is knee joint effusion. The knee joint consists of the medial and lateral femoral condyles and the medial and lateral humerus of the humerus and the humerus. It is the largest and most complex structure in the human body, and there are many opportunities for injury and infection. The main cause of knee joint synovitis is knee joint synovitis. A group of syndromes caused by knee sprains and various intra-articular injuries. Such as meniscus injury, synovial injury, cruciate ligament or collateral ligament injury, intra-articular injury and dislocation, knee osteoarthritis secondary to chronic synovitis of the knee and joint free body. Another reason is infection, which is common in synovial tuberculosis. Generally speaking, the blood vessels in the synovial membrane are rich, the blood circulation is good, and the resistance to bacteria is strong. However, in the case of infection with tuberculosis, the disease progresses slowly, Symptoms are good and bad, this is one of the chronic synovitis of the knee.

Cause

The knee joint is the joint with the largest synovial membrane, the largest joint surface and the most complicated structure. Because the synovial membrane of the knee joint is extensive and located in the superficial part of the limb, there are many opportunities for injury and infection. The main cause of knee joint synovitis is knee joint syndrome. A group of syndromes caused by knee sprains and various intra-articular injuries. Such as meniscus injury, synovial injury, cruciate ligament or collateral ligament injury, intra-articular injury and dislocation, knee osteoarthritis secondary to chronic synovitis of the knee and joint free body. Another reason is infection, which is common in synovial tuberculosis. Generally speaking, the blood vessels in the synovial membrane are rich, the blood circulation is good, and the resistance to bacteria is strong. However, in the case of infection with tuberculosis, the disease progresses slowly, Symptoms are good and bad, this is one of the chronic synovitis of the knee.

Knee synovitis, in the elderly more secondary to knee osteoarthritis, mainly due to mechanical biochemical stimulation of cartilage degeneration and bone hyperplasia, secondary knee synovial edema, exudation and accumulation Liquid, etc. In young adults, it is caused by acute birth and chronic injury. Acute trauma includes knee sprain, meniscus injury, collateral ligament or cruciate ligament injury, intra-articular fluid or sometimes hemorrhage, which is characterized by acute knee traumatic synovitis. Sometimes it can be caused by simple knee joint synovial injury, such as mild trauma, or chronic chronic knee strain. Coupled with wind, cold, and dampness, the knee joint gradually appears swelling and dysfunction, and chronic knee synovitis is formed.

The swelling of the joints is mainly caused by swelling after excessive exercise, and the pain is different. Non-swelling type, mainly joint pain, often accompanied by mild swelling. Studies have confirmed that the two types are essentially the same, except that the degree of synovial pathology varies. The researchers found that when the knee joint was subjected to excessive movement for a long time, the synovial tissue was congested and edematous, and the exudation of red, white blood cells and cellulose was positively correlated with the increase of intra-articular pressure and the decrease of oxygen partial pressure, and when exudation occurred. When the speed exceeds the compensatory absorption rate of the synovial membrane, the joint effusion, and thus the intra-articular pressure continues to rise, the oxygen partial pressure continues to decline in the vicious circle, and the chronic synovial inflammation such as degeneration of the synovial membrane is formed. It is believed that after excessive exercise, the occurrence of traumatic synovitis is not only related to repeated slamming of the articular surface, damage of the joint capsule, but also plays an important role in the development and outcome of the disease course.

an examination

Related inspection

Synovial fluid routine examination of synovial fluid visual inspection of bone and joint soft tissue CT examination

Synovitis is a common clinical disease, and the main symptom is knee joint effusion. The synovial membrane of the knee is the most extensive and complex part of the human joint, and it also forms the largest synovial cavity, and forms a wrinkle to accommodate various movements of the knee joint. Knee synovitis is the most common in the clinic because of the negative weight of the knee joint and the most exercise. The synovial membrane is mainly distributed around the joint. Connected to the joint cavity, secreting lubricating fluid to lubricate the joint. It mainly manifests joint swelling and swelling, pain, exudation, joint effusion, difficulty in squatting, and limited function.

Differential diagnosis

Knee joint synovitis is the main cause of patency of the knee joint. Knee joint effusion is an immune regulation of its own, and it is a protective fluid secreted by the body. Swelling of the knee joint is one of the diagnostic points of knee joint meniscus injury. Knee meniscus injury is a common condition of the knee joint. The meniscus is located on the tibial articular surface and has medial and lateral half-moon shaped bone.

Synovitis is a common clinical disease, and the main symptom is knee joint effusion. The synovial membrane of the knee is the most extensive and complex part of the human joint, and it also forms the largest synovial cavity, and forms a wrinkle to accommodate various movements of the knee joint. Knee synovitis is the most common in the clinic because of the negative weight of the knee joint and the most exercise. The synovial membrane is mainly distributed around the joint. Connected to the joint cavity, secreting lubricating fluid to lubricate the joint. It mainly manifests joint swelling and swelling, pain, exudation, joint effusion, difficulty in squatting, and limited function.

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