For that reason it is important to be aware of potential symptoms.

It usually develops after bacteria enter the body through a break in the skin or an injury.

It leads to spreading warmth, redness, and pain.

Doctor looking at patient’s knee

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If left untreated, it can affect deep structures, including the joint space.

However, this risk remains low.

In total knee replacement surgery, the risk of developing an infection is around 1%.

Infection after surgery is an emergency and requires immediate treatment.

Bacterial Joint Inflammation

Septic arthritisrefers to an infection within the joint space.

While bacteria are the most common cause, septic arthritis can also be because of viruses or fungi.

Knee Bursitis

Bursitis shows up when bursae, fluid-filled sacs surrounding different joints, become inflamed.

Bursitis can develop due to injury, trauma, repetitive motions, and other medical conditions like gout.

Imaging studies such as X-ray and computed tomography (CT) scans may be beneficial in diagnosing osteomyelitis.

Drainage can either be done by the insertion of a needle into the joint space or witharthroscopic surgery.

Additionally, having knee symptoms accompanied by a fever and/or chills is another reason to contact a healthcare provider.

Summary

An infected knee joint can occur after surgery, trauma, superficial or deep tissue infection.

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