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.
What is behind knee swelling? A swollen area that can be felt behind the knee can be caused by several different conditions. A Bakerâs cyst is a collection of synovial fluid (fluid that is present within joint spaces) that bulges out through the back of the knee joint and can be felt in the back of the knee as a lump or enlarged area.