Pleurisy Causes & Risk Factors. Causes and Risk Factors for Pleurisy. Pleurisy can develop as a complication of several conditions. In some cases, the condition is idiopathic (i.e., occurs with no known cause). The most common cause for pleurisy is viral infection (e.g., influenza, pneumonia).
An extrarenal pelvis is a normal variation from the usual anatomy, and it does not indicate a state of disease. However, renal pelvises do not usually protrude in such a manner, and it may appear as if there is a blockage in the renal pelvis that is preventing urine from emptying, which is a serious medical condition.
The hip is a ball-and-socket joint. The socket (called the acetabulum) is part of the pelvis. The ball (called the femoral head) is attached to the upper end of the thigh bone, and rests inside the socket.The labral cartilage structure surrounds the opening of the hip socket and joins seamlessly to the articular cartilage lining the hip socket.or the hip to last a lifetime, the ball and socket and cartilage structures all must work together like a well-oiled machine. When abnormal contact occurs between the ball of the hip and the rim of the hip socket, this condition is called femoral acetabular impingement or hip impingement.