Osteomyelitis

Also called Bone infection

Osteomyelitis is an infection in a bone. It is usually caused by bacteria that reach the bone through the blood, an open wound, a broken bone or surgery. It is more likely in people with diabetes, poor circulation, a weakened immune system, or who inject drugs. It can affect children and adults.

Last updated Nov 9, 2026

What it is

It is treated with antibiotics, often for several weeks, sometimes given into a vein at first.

Surgery may be needed to drain pus or remove damaged bone. Long-lasting (chronic) osteomyelitis can be harder to treat and needs specialist care.

Common signs

  • Pain in a bone, often getting worse
  • Swelling, redness and warmth over the area
  • High temperature
  • Feeling generally unwell
  • In children, not wanting to use an arm or leg

How it is usually diagnosed

  • Blood tests for infection
  • X-ray, MRI or other scans
  • A sample of bone or fluid to find the bacteria

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Blood test results
  • Scan reports
  • Culture results
  • Discharge letters and antibiotic plans

Questions to ask your doctor

  • How long will I need antibiotics?
  • Will I need surgery?
  • What signs mean the infection is coming back?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Bone pain with a high temperature, or a child who suddenly will not use a limb: get urgent help the same day

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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