Health condition
Chronic osteomyelitis
Chronic osteomyelitis is long-standing bone infection - often following surgery, open fracture or diabetic foot disease - characterised by dead bone (sequestrum), discharging sinuses and relapsing flares; cure requires combined surgical and antibiotic treatment in a specialist bone infection unit.
Why trust this guide
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Editorial team
Written by our editorial team from the UK sources listed on each page.
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Sourced from guidance
Checked against current NHS and UK specialist society guidance at the time of review.
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Current for 2026
Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.
Key facts
The essentials at a glance.
The symptoms to recognise, when to seek help, which specialist to see, and what treatment usually involves.
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Hallmarks: recurrent pain, swelling and discharging sinuses over bone, often with years between flares; dead bone harbours the organisms
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Deep bone sampling for culture - not sinus swabs - identifies the organism and guides targeted antibiotics
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Cure usually needs surgery to remove dead bone and implants, manage the dead space, and stabilise the skeleton, combined with weeks of targeted antibiotics
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The UK has dedicated bone infection units combining orthopaedics, infection specialists and plastic surgery - referral transforms outcomes in complex cases
Understanding the condition
What it is and what happens next.
What causes it, how it is diagnosed, and the treatment routes available in the UK.
What it is and how it feels
Bacteria in chronic osteomyelitis survive inside dead bone fragments and biofilm on implants, beyond the reach of antibiotics and immune cells - which is why tablets alone suppress rather than cure, and why the disease can reignite decades after the original injury. MRI maps the extent, but the defining question is anatomical: where is the dead bone, and can it be removed while keeping the limb functional?
Diagnosis and treatment routes
Definitive treatment is a planned single-stage or staged operation: excision of sequestrum and infected tissue, deep samples off antibiotics for culture, dead-space management with local antibiotic carriers, skeletal stabilisation and soft-tissue cover where needed - followed by six or more weeks of culture-directed antibiotics. For patients unfit for or declining surgery, long-term suppressive antibiotics are a legitimate strategy, and any sudden change in a chronic sinus (bleeding, mass, odour) needs review to exclude the rare complication of malignant change. In much of the UK, a routine NHS referral to the relevant specialist clinic can take several months, whereas an initial appointment with a private consultant is typically available within around two weeks.
Seeing a specialist
Who to see, and how quickly you can be seen.
The specialist for this condition is usually a orthopaedic surgeon in a specialist bone infection unit. Your GP can refer you on the NHS, or you can arrange a private consultation directly.
A quiet reminder
This guide is for information, not medical advice.
Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any of the emergency symptoms described above.
Frequently asked
Common questions about Chronic osteomyelitis.
Quick, plain-English answers to what people ask us most.
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What is chronic osteomyelitis?
Chronic osteomyelitis is a long-standing, persistent bone infection that has failed to fully resolve, often despite previous treatment, and can continue or recur over months to years. It differs from acute osteomyelitis, which is a shorter, more rapidly developing infection. It can be challenging to treat fully, sometimes requiring a combination of prolonged antibiotics and surgery.
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What causes chronic osteomyelitis?
It typically develops when an acute bone infection is not fully eradicated, often because bacteria can persist within areas of dead or poorly perfused bone tissue that antibiotics struggle to reach effectively. It can also follow open fractures, orthopaedic surgery, or spread from a nearby soft tissue infection, particularly in people with conditions such as diabetes that impair healing and immune response. Identifying the specific bacteria involved, often through bone biopsy, is important for guiding effective treatment.
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What symptoms does chronic osteomyelitis cause?
Symptoms can include persistent or recurring bone pain, swelling, warmth over the affected area, and sometimes a discharging wound or sinus tract connecting the infected bone to the skin surface. Symptoms can wax and wane over a long period, sometimes with periods of apparent improvement followed by recurrence. This relapsing pattern is a hallmark of chronic osteomyelitis.
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Is chronic osteomyelitis dangerous?
Yes, if inadequately treated it can lead to ongoing bone destruction, chronic wounds, and, rarely, spread of infection more widely, and can significantly affect function and quality of life over a prolonged period. With comprehensive treatment, combining surgery to remove infected or dead bone tissue and prolonged targeted antibiotics, however, many people achieve eventual resolution. This combined approach generally offers the best chance of fully clearing the infection.
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How is chronic osteomyelitis treated?
Treatment typically requires surgical removal of infected and dead bone tissue (debridement), combined with a prolonged course of targeted antibiotics, often guided by bacterial culture results from bone samples taken during surgery. Reconstructive procedures may be needed afterwards depending on how much bone was removed. This combination approach, addressing both the infection and any structural damage, generally offers the best chance of full resolution.
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When should I see a specialist?
See a doctor if you have persistent or recurring bone pain, swelling, or a discharging wound, particularly with a history of previous bone infection, fracture, or orthopaedic surgery. NHS orthopaedic or infectious disease referral can take several weeks; a private consultation is typically available within about 2 weeks for earlier specialist assessment.