Knee pain is one of the main manifestations of knee arthritis. But in addition to knee osteoarthritis, there are some other common knee arthritis that can also have knee pain and other symptoms. If these diseases are not well differentiated in the early stage, they are easily misdiagnosed as osteoarthritis and delay treatment. Therefore, knee pain can not be simply considered to be osteoarthritis, and it requires a specialist to do the diagnosis before treatment.
Gouty arthritis is a crystal-related joint disease caused by the deposition of sodium urate due to elevated blood uric acid, and belongs to the category of metabolic rheumatism. Most occur in men over the age of 40. Female patients are less common and occur mainly after menopause.
The urate crystals are not evenly distributed throughout the body, but rather have their favorite places to stay, mainly joints, especially joints with poor blood circulation. Most of them are the first toe (big toe) joints red, swollen, hot, painful onset, midnight raids, pain such as knife cutting, such as bite, cone heart piercing; followed by the foot, heel, ankle joint 5 years or so knee joint attack: 10 years or so wrist and metacarpophalangeal joints; the auricle is also prone to gout. If repeated episodes will gradually affect more joints, because multiple joints alternately occur, it is not fixed, like the wind, “good and change”, it is called gout.
Rheumatoid arthritis is a chronic autoimmune disease with a high rate of disability. All ages can be ill, but most of the patients are middle-aged, and the incidence of women is higher than that of men.
Mainly manifested as symmetrical small arthritis, swelling of the wrist and finger joints is more common, but also involving the knee, shoulder, toe joints. At the beginning of the morning, the joints are stiff and can last for more than 1 hour. The fusiform shape is swollen. If the timely and effective treatment is not obtained, the joint function will be degraded, and joint deformation and disability will gradually appear. The hand joints are particularly susceptible to deformation and deformation, which causes young adults to lose their labor. In addition, subcutaneous nodules and rheumatoid factor may be positive, and X-ray examination showed that the joint erosion was dominant.
Ankylosing spondylitis is a chronic inflammatory disease caused by autoimmune abnormalities and belongs to the category of rheumatic immune diseases. Young people who are born in 14-30 years old, even in children aged 12 or 3, account for 90% of men. Female patients have relatively mild symptoms and are easily missed.
The first lesion in most people is inflammation of the ankle joint (the end of the spine meets the pelvis). Under the effect of inflammation, the patient may have low back pain or stiffness. The characteristics of this kind of low back pain are somewhat strange. The patient’s back pain is aggravated in the morning or after the break, but is relieved after the activity.
As time goes by, the spine will slowly merge and harden from bottom to top, hardening and not bending, as straight as a bamboo pole. Some people have severe hunchbacks and are inconvenient to walk. If someone calls behind them, they can’t turn their heads. They can only turn the whole body slowly. Some patients have even had a fracture, or eventually lost their ability to walk due to hip involvement. 95% of patients have HLA-B27 antigen (ie, HLA-B27 positive).