Knee pain, redness, swelling and fever may be caused by knee injury, joint infection and gouty arthritis.
1. Knee joint injury: after knee joint injury, there may be bleeding in the muscle of the injured part, which leads to the increase of local internal pressure in the knee joint, thus leading to knee pain, redness and swelling with fever.
2. Joint infection: if the patient’s joints are infected with bacteria, tuberculosis and other pathogenic microorganisms, which triggers an inflammatory reaction, leading to redness, swelling, heat and pain in the infected joints.
3. Gouty arthritis: If the patient’s uric acid metabolism is abnormal, gout stones may be deposited in the joints, leading to inflammatory reactions in the joints, resulting in knee pain, redness, swelling and fever.
If the patient’s knee pain, redness and swelling with fever, may also be due to rheumatoid arthritis, rheumatoid arthritis, bone tumors and other reasons, should go to the hospital in time for treatment.