Health condition
Bone infarcts
A bone infarct is an area of marrow and bone that has died from lost blood supply within the shaft or metaphysis of a long bone; usually an incidental, serpiginous-looking finding on MRI or X-ray, its importance lies in identifying the cause and distinguishing it from a cartilage tumour.
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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Mature infarcts show a characteristic serpiginous ("map-line") calcified border on X-ray and MRI, typically around the knee or in the proximal humerus
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Same causes as avascular necrosis - steroids, alcohol, sickle cell disease, diving, pancreatitis - and multiple infarcts suggest a systemic driver
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The main radiological differential is an enchondroma or low-grade chondrosarcoma; the pattern of mineralisation usually separates them
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Most infarcts need no treatment - management is cause review and reassurance; rare late complications include collapse near a joint and, exceptionally, sarcomatous change
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
Unlike avascular necrosis at a joint surface, a shaft infarct usually threatens nothing structural: the dead marrow is walled off, calcifies at its margins over years, and is discovered when a knee MRI for something else reveals the tell-tale geographic scar. The finding still deserves a moment of thought - why did this bone infarct? - and steroid history, alcohol, diving and haemoglobinopathy cover most answers.
Diagnosis and treatment routes
Radiological confidence is usually achievable: infarcts calcify at the periphery in a serpentine rim while cartilage tumours mineralise centrally in rings and arcs, and MRI characteristics differ correspondingly - specialist musculoskeletal radiology review settles most cases without biopsy. Follow-up is pragmatic rather than intensive: new or changing pain at an infarct site warrants re-imaging, both for the rare late collapse and the rarer still malignant transformation, but the typical silent infarct can simply be documented and left in peace. 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 consultant orthopaedic surgeon or radiologist-led review. 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 Bone infarcts.
Quick, plain-English answers to what people ask us most.
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What is bone infarcts?
Bone infarcts is a recognised medical condition that can affect people in different ways, ranging from mild and easily managed to more significant, depending on the underlying cause, how early it is picked up, and how it is treated. Getting a clear diagnosis is usually the first step towards the right management plan.
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What causes bone infarcts?
Bone infarcts can arise from a combination of factors, which may include genetics, lifestyle, environmental exposures, other underlying health conditions, or simply the normal effects of ageing on the body. In many cases no single cause is found, and several factors act together. A clinician can help identify which factors are most relevant in an individual case.
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What are the symptoms of bone infarcts?
Symptoms of bone infarcts vary from person to person and depend on how severe the condition is and which structures are affected. Some people notice symptoms gradually over weeks or months, while others experience a more sudden onset. Because symptoms can overlap with other conditions, a proper assessment is important to reach an accurate diagnosis rather than relying on symptoms alone.
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Is bone infarcts serious or dangerous?
Most cases of bone infarcts are manageable, especially when identified and treated early, but severity varies from mild and self-limiting to more significant, depending on individual circumstances. Left unassessed, some cases can lead to complications or a longer-term impact on daily life. If you are worried about your symptoms, it is always worth getting them checked rather than waiting.
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Is bone infarcts hereditary or genetic?
Some cases of bone infarcts have a genetic component and can run in families, while others occur without any family history at all. Having a relative with the condition may modestly increase your own risk, but it does not mean you will definitely develop it yourself. If you are concerned about a family history, mention this to your doctor, as it may occasionally influence screening or monitoring.
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Can bone infarcts be cured, reversed or prevented?
Outlook varies with bone infarcts: some cases resolve completely with treatment, others improve significantly but need ongoing management, and a smaller number become a long-term condition to be controlled rather than cured. Prevention strategies, such as addressing modifiable risk factors, can reduce your chances of developing it or of it recurring, but cannot guarantee against it in every case.
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How is bone infarcts treated?
Treatment for bone infarcts is tailored to the individual and depends on severity, underlying cause and personal circumstances. Options can range from simple lifestyle measures, monitoring and conservative treatment through to medication, specialist procedures or surgery in more significant cases. A specialist assessment helps identify which combination of treatments is most appropriate for you.
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How long does bone infarcts last?
The duration of bone infarcts varies considerably: some people recover within days or weeks, while others live with a more persistent or recurring condition that needs ongoing management. Response to treatment, how early it is started, and individual factors all influence the timescale. Your clinician can give you a more personalised estimate once your specific circumstances are known.
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When is surgery needed for bone infarcts?
Surgery is not usually the first option for bone infarcts and is generally reserved for cases where conservative treatment has not worked, symptoms are severe, or there is a significant structural problem that needs to be corrected directly. The decision depends on your specific findings, symptoms and how they are affecting your life. A specialist consultation is the best way to establish whether surgery is being considered too early, or should be considered sooner rather than later.
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When should I see a doctor about bone infarcts, and how quickly can I be seen privately?
It is worth seeing a doctor about bone infarcts if symptoms are persistent, getting worse, or affecting your daily life, rather than waiting to see if they settle on their own. NHS routine referrals to a specialist can currently take anywhere from around 20 to 45 weeks or more depending on your area, whereas a private consultant can typically see you within about 2 weeks. Getting an earlier assessment can help clarify the diagnosis and start the right treatment sooner.