Hygroma, also called bursitis, is a term defining the inflammation affecting a bursa. A bursa is a sac of fluid located in a joint to facilitate movement. Elbow bursitis is the inflammation of the bursa located at the back of the elbow. It can be due to trauma, multiple shocks, or an inflammatory disorder of the joint. Elbow bursitis may be large. In general, it is not painful. The application of ice and anti-inflammatory medications can help reduce elbow bursitis. Surgery is performed as a last resort.