Osteoarthritis happens when the cartilage in your joints breaks down causing pain, stiffness, and swelling.
Anserine bursitis is a swelling of the bursa at the inside of the knee and causes pain, redness and stiffness.
Sarcoidosis is a rare disease that can cause swelling and hard lumps in the lymph nodes and organs.
Osteochondritis dissecans is a joint problem that causes pain, swelling, and a locked up joint.
Pseudogout is a type of arthritis similar to gout, where crystals form in the joints, causing swelling and pain.
Rheumatoid arthritis is an autoimmune disease that causes pain, swelling, and joint damage.
An ACL injury happens when you tear or overstretch the anterior collateral ligament on the inside of the knee.
Many people with pain around the kneecap have patellofemoral pain syndrome.
A posterior cruciate ligament injury causes pain, swelling, weakness and instability of the knee.