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.
Sometimes if the pressure is too high, the cyst can burst, causing the joint fluid to escape into the calf muscle causing severe pain and inflammation. A knee examination shows a bulge or swelling and occasionally tenderness behind the knee. Most Bakerâs cysts do not require treatment. If the cyst is painfully large, treatment is directed at reducing the amount of fluid the knee produces, often by using cortisone injections into the knee joint.