Egypt's second faith is Coptic Christianity. Copts are heirs of an ancient Christian rite. Coptic Christianity was the predominant religion in Egypt until the 10th century when a lot of Christians diverted to Islam. Christianity itself was brought in Egypt by St. Mark in the middle of the first century AD.
Other possible causes of swelling behind the knee include abscesses (infections); tumors of the skin, soft tissue, or bones; bleeding; deep venous thrombosis (blood clot in the deep veins of the legs); or deformity of the joint after a fracture of any of the bones of your knee joint.
Behind knee pain is discomfort or soreness behind the knee joint. It may occur with or without movement and can be severe enough to limit movement. People may describe behind knee pain as discomfort, inflammation, increased warmth or burning, soreness, stiffness, or pain. Behind knee pain is a common sign of a Bakerâs cyst, which is a buildup of synovial fluid behind the knee. Synovial fluid lubricates the joints and reduces friction between the joint cartilages.