Conditions / Systemic & Complex
Charcot Foot
A hot, red, swollen foot in someone with neuropathy is a podiatric emergency until proven otherwise. Early recognition and offloading of Charcot foot is the single most important factor in preventing severe, permanent deformity.
This may be a medical emergency
If you have diabetes or known peripheral neuropathy and notice a foot that is suddenly hot, red, swollen or looks different in shape — even without significant pain — seek same-day assessment. Call us immediately or attend A&E if we are unable to see you the same day. Continuing to walk on an undiagnosed Charcot foot can cause irreversible bone destruction within days to weeks.
Charcot foot (Charcot neuroarthropathy) is a serious condition in which the bones, joints and soft tissue of the foot progressively weaken, fracture and collapse — almost always in someone with significant peripheral neuropathy. Because sensation is impaired, the person often continues to walk on the affected foot without realising the extent of the damage occurring underneath, which is what makes this condition so dangerous.
Left unrecognised, the foot can collapse into a severely deformed "rocker-bottom" shape, dramatically increasing the risk of pressure ulcers, infection and, in the most serious cases, amputation. Recognised and offloaded early, however, the bones can heal in a stable position and serious deformity can often be avoided — which is why early diagnosis is so critical.
Peripheral Neuropathy
The essential underlying factor — without significantly reduced sensation, Charcot foot does not develop, as pain would normally prevent continued weight-bearing on an injured foot.
Diabetes
The most common underlying cause of the neuropathy that leads to Charcot foot, particularly with long-standing or poorly controlled diabetes.
Minor Trauma
Often triggered by a minor injury, sprain or even an unremarkable misstep — which then goes unrecognised and unprotected due to reduced sensation.
Other Neuropathic Conditions
Any condition causing severe peripheral neuropathy — including alcohol-related, some autoimmune conditions, and certain neurological disorders — can carry Charcot foot risk.
One foot noticeably hotter than the other (often 3–7°C warmer)
Redness and swelling, often without significant pain
A change in the shape of the foot or arch
A feeling of instability or the foot "giving way"
Mild discomfort despite visibly significant changes
History of diabetes or known neuropathy
Stage 0 — Prodromal
At-Risk Foot
Warmth, swelling and mild redness with normal X-ray. This is the critical window — offloading now can prevent bone destruction entirely.
Stage 1 — Fragmentation
Active Bone Destruction
Bones fracture and joints dislocate. The foot is hot, swollen and unstable. Strict offloading is essential to limit further collapse.
Stage 2 — Coalescence
Healing Begins
Swelling and warmth reduce as the body begins to heal and stabilise the bone fragments. Continued protection is still needed.
Stage 3 — Consolidation
Remodelling
The foot has stabilised, often in an altered shape. Long-term footwear and orthotic management is needed to protect the new foot structure.
The cornerstone of treatment at every active stage is strict offloading — taking weight off the affected foot to allow bones to heal and stabilise rather than continuing to fragment. This often requires close coordination between podiatry, orthopaedics and your diabetes team.
Why is a hot, swollen foot so serious if it isn't very painful?
Because peripheral neuropathy reduces or removes normal pain signals, someone with Charcot foot can continue walking on a foot with actively fracturing bones without feeling proportionate pain. This is exactly why the condition is dangerous — the usual warning sign (pain) that would normally stop someone walking on an injury is unreliable.
Can Charcot foot be mistaken for something else?
Yes — it is frequently mistaken for cellulitis (skin infection), gout or a simple sprain in its early stages, which can delay correct diagnosis. If you have known neuropathy or diabetes and develop a hot, swollen foot, it's important that Charcot foot is specifically considered and ruled out promptly.
Do I need to stay off my foot completely?
During the active phase, strict offloading — often with a total contact cast, specialist boot, or in some cases crutches or a wheelchair — is essential to allow the bones to heal in position rather than continuing to collapse. Your treatment team will guide you on exactly what level of weight-bearing, if any, is safe at each stage.
Is this covered by health insurance?
Podiatry consultations are typically covered by most major insurers. We work with Bupa, Aviva, WPA and others. See our
Insurance page for full details. Given the urgency of this condition, please call us directly rather than waiting to confirm insurance details first.
Concerned about your foot?
If you have diabetes or neuropathy and your foot looks or feels different, don't wait — contact us today.
