what causes internal pain in the knee
Patellofemoral pain syndrome is a common cause of pain on the inside of the knee. It occurs when the patella or kneecap rubs against the bone underneath creating friction and pain.Patellofemoral pain is usually known as a cause of pain at the front of the knee as well as sometimes on the outside of the knee.ess common causes of medial knee pain. Synovial plica is a fold in the synovial membrane which surrounds the knee joint and contains the lubricating synovial fluid. The fold is found along the inside of the knee cap causing symptoms of pain and discomfort and a sharp pain may be felt when squatting.