Why does olecranon bursitis cause elbow pain?

The olecranon bursa is a small fluid-filled cushion over the pointed back of the elbow. Repeated leaning, a knock, or ongoing friction can make its lining inflamed and cause extra fluid to collect. This creates tenderness and a visible or soft swelling behind the elbow. Bending the arm compresses the bursa, while straightening can stretch the irritated tissue. Elbow Pain is a common presentation of Olecranon Bursitis, but elbow pain can also have other causes.

Avoid leaning on the affected elbow and reduce activities that repeatedly bend or press it for a short period. Cold packs wrapped in cloth may calm discomfort; keep each application brief and protect the skin. Gentle movement within a comfortable range can help prevent the joint from becoming guarded. A clinician can check whether infection, injury, or another elbow problem is involved and may suggest suitable pain relief, protection, or physiotherapy.

Arrange prompt medical assessment if the swelling is hot, increasingly red, rapidly enlarging, or accompanied by fever, chills, or feeling unwell. Seek urgent help after a significant injury, if the elbow looks deformed, or if you cannot move the arm. A painful lump that persists or keeps returning also deserves an examination, especially if it limits work, sleep, or everyday movement.

Could this be infected or linked to an injury? Should the elbow be protected during work or sport? Which movements are safe while it settles? What changes would mean I need another review?