Bursitis

Bursitis is an inflammation of a bursa [11] that often affects the shoulders but may also cause knee pain. A bursa is a small fluid-filled sac that is typically located between moveable body parts, such as the joints. It helps reduce friction when the joints move.
This sac can become inflamed due to falls, overuse, kneeling, or other activities that irritate the knees. Some people call this condition preacher’s knee because constant kneeling is a common cause. The appropriate medical term for bursitis of the knee is patellar bursitis.
Gout
Gout [12] typically affects the joint of the big toe, but it may also affect the knees. This condition is caused by a buildup of uric acid in the body. Gout attacks usually arise from the buildup of this acid in the joints and can last for up to 10 days. Gout attacks are often accompanied by intense pain and swelling. Sometimes, the affected joint may feel warm.
Conclusion
Knee pain has a wide range of causes. Not all of these causes are serious, but some can lead to chronic pain or disability if left unattended. Although it is not possible to completely avoid knee pain, frequent exercise and care while playing sports can help reduce the incidence.
References:
[1] https://www.mayoclinic.org/diseases-conditions/swollen-knee/symptoms-causes/syc-20378129
[2] https://www.healthline.com/health/meniscus-tears
[3] https://newsnetwork.mayoclinic.org/discussion/
[4] https://www.healthline.com/health/meniscus-tears
[5] https://www.healthline.com/health/osteoarthritis
[6] https://www.healthline.com/health/meniscus-tears
[7] https://www.healthline.com/health/dislocation
[8] https://www.healthline.com/health/bakers-cyst
[9] https://www.mayoclinic.org/diseases-conditions/tendinitis/symptoms-causes/syc-20378243
[10] https://orthoinfo.aaos.org/en/diseases–conditions/osgood-schlatter-disease-knee-pain/
[11] https://www.webmd.com/pain-management/arthritis-bursitis
[12] https://www.healthline.com/health/gout











