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.
If these areas are aggravated, either through a direct injury or over time, then a person may experience pain behind the knee. What causes pain behind the knee? In addition to pain behind the knees, you may also experience some of these symptoms: Swelling behind the knee; A lump behind the knee; Fluid around the knee; Clicking knee; Sensation that the knee is locking; It is important to note these symptoms to discuss with your physician during your visit. The following are the most common causes of behind knee pain: Baker's cyst- Also