What should you know about gangrene and osteomyelitis?

Gangrene describes tissue that has died because of poor blood flow, severe infection, or injury. Osteomyelitis is an infection within bone, which may begin through a wound, spread from nearby tissue, or enter the bloodstream. They can occur together when an infected wound extends deeper, but one does not automatically prove the other. Warning features can include increasing pain, swelling, warmth, drainage, skin colour change, bad odour, fever, or feeling very unwell.

Treat suspected gangrene or bone infection as a medical problem rather than something to monitor at home. Keep any wound covered with a clean dressing, avoid pressure on the area, and do not apply harsh chemicals or leftover antibiotics. A hospital team may examine blood flow and tissue, take samples or images, give antibiotics, remove infected or dead tissue, and address the source of poor circulation. In selected situations, Bone Grafting may help rebuild a bone defect after infection has been controlled.

Go to emergency care for black, grey, or rapidly changing skin; severe or disproportionate pain; spreading redness; foul drainage; fever with shaking chills; confusion; faintness; or fast breathing. Seek immediate help if a wound exposes bone, follows a serious injury, or is worsening despite basic care. People with diabetes, poor circulation, or reduced sensation should seek advice early for any foot or limb wound.

Ask whether bone or soft tissue is involved, how blood flow will be checked, which samples or scans are needed, how long treatment may continue, and what wound-care or pressure-relief plan protects healing.