There are more causes of knee pain, which may be caused by rheumatism or rheumatoid arthritis, osteoarthritis, ligament and meniscus injury, osteophytes (bone spurs), trauma and other reasons.
1. Rheumatic or rheumatoid arthritis: often due to group A hemolytic streptococcal infection, long-term exposure to cold, immune factors. It can be manifested as redness, swelling and pain in the knee area, and the symptoms are especially aggravated after localization of cold.
2. Osteoarthritis: its occurrence is related to age, obesity, inflammation, trauma and genetic factors, and is the result of the joint action of many factors.
3. Ligament and meniscus injuries: generally, when performing sports activities, the knee joint is violently sprained or due to traffic accidents and other external violent injuries, resulting in knee meniscus and ligament injuries.
4. Osteomalacia (bone spurs): with the aging of the joints, the mechanics of the joints change, the joints are subjected to abnormal local stress, and the repeated stimulation promotes the formation of bone spurs; it is also related to rheumatoid arthritis, gout and other diseases.
5. Trauma: for example, the knee area by external impact, car accidents and other factors can appear localized pain, which can lead to localized swelling and even walking difficulties.
There are other causes of knee pain, you need to go to the hospital in time, clear cause for standardized treatment.