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.
Popliteus tendonitis or injury is inflammation or injury to the small muscle at the back of the knee called the popliteus. The role of the popliteus muscle is to internally rotate the tibia or shin bone. Symptoms include pain at the back of the knee joint with tenderness when pressing in.Pain may be reproduced when the knee is bent against resistance whilst the lower leg or tibia bone is rotated outwards.t is usually caused by an injury or condition in the knee joint which will make the back of the knee swell up increasing pressure and causing pain. There is usually a very obvious round golf ball sized swelling at the back of the knee.