Pain in the knee is a common problem in people of all ages. The source of knee pain can be any of the bony structures in the knee joint (fibula, femur, tibia), the kneecap (patella), or the cartilage (meniscus), ligaments, and tendons of the knee. The common aggravating factors of the knee pain include intense physical activity, obesity, surrounding muscle conditions, diseases, and traumas. A knee injury can appear at any age, and most patients can get relief from home remedies unless the condition gets too severe.
Self-care measures and home remedies work well for many knee types of mild to moderate knee pain. The use of knee braces and physical therapy will also reduce knee pain. However, surgery may be necessary in certain cases.
1Knee Pain Symptoms
A knee pain could have various symptoms depending on the underlying cause. The following are the most commonly prevailing signs and symptoms associated with knee pain:
The appearance of redness around the knee joint is a relatively common symptom of arthritis, particularly in rheumatoid arthritis and septic arthritis. An injury to surrounding structures or to the joint itself might cause redness around the knee joint. 
Several joints might develop redness at the same time. Bone tumors that grow within the synovium or deposits in the bone are some of the rare causes of joint redness.