life expectancy. Sometimes the terms âlife spanâ and âlife expectancyâ are used interchangeably, but they have different meanings.
Results: Causes of Sudden onset of knee pain OR Unexplained bruising. 2. 3. A disease of the blood characterized by abnormal hemoglobin in the blood. The abnormality usually arises from a genetic defect which results in the hemoglobin have an abnormal structure.
A lubricating fluid called synovial (sih-NO-vee-ul) fluid helps your leg swing smoothly and reduces friction between the moving parts of your knee. But sometimes the knee produces too much synovial fluid, resulting in buildup of fluid in an area on the back of your knee (popliteal bursa), causing a Baker's cyst. This can happen because of: 1  Inflammation of the knee joint, such as occurs with various types of arthritis.  A knee injury, such as a cartilage tear.