Inﬂammation within a bursa (see BURSAE). Acute bursitis is usually the result of injury, especially on the knee or elbow, when the prominent part of the joint becomes swollen, hot, painful and red.
Chronic bursitis is due to too much movement of, or pressure on, a bursa, with ﬂuid building up therein. Fluid may need to be drained and the aﬀected area rested. Excision of a chronically inﬂamed bursa is sometimes necessary. For example, the condition of housemaid’s knee is a chronic inﬂammation of the patellar bursa in front of the knee, due to too much kneeling.
Chronic bursitis aﬀecting ligaments round the wrist and ankle is generally called a GANGLION.