Pyogenic arthritis

Septic arthritis refers to a purulent infection within a joint, caused by bacterial infection. It is more common in children and is primarily characterized by joint redness, swelling, warmth, pain, and restricted movement. Septic arthritis most frequently affects the hip joint (located where the thigh connects to the buttocks) and the knee joint, followed by the elbow, shoulder, and ankle joints. Other joints are rarely affected.