By Marc Darrow, MD, JD
“The pain is mostly in the arch of my foot. I believe I have Charcot foot.”
Arch pain alone does not establish Charcot foot. However, if the foot is newly swollen, warmer than the other foot, red, or changing shape—especially in someone with reduced sensation or diabetes—the priority is prompt assessment and protection from further loading. I would not begin by assuming this is plantar fasciitis or recommending an injection.
If those changes are present, seek same-day medical assessment and minimize weight on the affected foot while arranging care. A clinician can determine the safest way to protect it. Fever, an open or draining wound with spreading redness, or feeling systemically unwell requires urgent care because infection may be involved.
The distinction matters: some causes of arch pain respond to gradual exercise and routine footwear changes. Active Charcot foot can worsen when someone continues walking on it, even if pain is relatively mild.
What is Charcot foot?
Charcot neuro-osteoarthropathy is a condition in which bones and joints can become damaged and unstable in a foot with impaired protective sensation. Diabetes-related neuropathy is a common setting, although neuropathy can have other causes. The arch may collapse as the structure changes. Charcot foot is different from simply having a low arch or a painful plantar fascia. (1)
“Neuro” refers to nerves, “osteo” to bone, and “arthropathy” to joint disease. Understanding that combination helps explain why treating only pain is insufficient when the condition is active.
A person may notice swelling or a change in shoe fit before recognizing the seriousness of the problem. Pain can be present, but its intensity does not reliably describe the amount of damage. Reduced sensation can make substantial injury less painful than expected.
What would make the diagnosis more concerning?
A clinical review emphasizes suspicion when a person with peripheral neuropathy develops a swollen foot after little or no recalled injury. Warmth, redness, and limited pain may accompany it. Early X-rays and laboratory results may be unrevealing, so reassuring initial tests do not necessarily end the investigation. (2)
For the question that opens this article, several details remain unknown. Has Charcot foot been diagnosed by a clinician, or is it a concern based on the location of pain? Is there numbness or reduced sensation? Is one foot visibly different from the other? Is the arch newly changing, or has it always been low?
These questions help determine urgency and the direction of assessment. They cannot establish a diagnosis remotely. A photograph or the ability to walk is also insufficient to exclude an active problem.
Other causes of pain in the arch
The arch contains bones, joints, ligaments, tendons, and the plantar fascia. Pain in that region can therefore have several explanations.
| Possible problem | Clues that may help guide assessment |
|---|---|
| Plantar fasciitis | Pain often centered near the inner heel, sometimes extending along the arch; frequently worse with the first steps after rest |
| Progressive collapsing foot deformity | A changing arch with pain along the inner foot or ankle; supporting tendons and ligaments may be involved |
| Stress injury or fracture | Focal bone pain related to loading; continued activity may worsen symptoms |
| Nerve-related pain | Burning, tingling, numbness, or altered sensation |
| Active Charcot foot | Warmth, swelling, redness, or structural change in a foot with neuropathy; pain may be less than expected |
Plantar fasciitis affects the band of tissue along the sole, and first-step heel pain is a familiar pattern. That pattern is helpful, but it should not be used to dismiss swelling or warmth in a neuropathic foot. (3)
Progressive collapsing foot deformity is another cause of arch change. The posterior tibial tendon and supporting ligaments contribute to arch support, and dysfunction can affect the shape of the foot. It is a different clinical problem from Charcot disease. (4)
Stress fractures are another reason not to push through unexplained arch pain. Early recognition and modification of loading matter when bone injury is suspected. (5)
The table is a guide to questions, not a self-diagnosis tool. More than one condition can coexist.
How is suspected Charcot foot assessed?
The assessment considers sensation, circulation, skin integrity, swelling, warmth, alignment, and relevant medical history. Examination of both feet provides useful comparison. Imaging helps identify bone and joint changes and alternative causes.
The IWGDF guideline recommends X-rays for suspected active Charcot neuro-osteoarthropathy and MRI when X-rays appear normal but clinical suspicion remains. It also recommends prompt knee-high immobilization and offloading while diagnostic assessment is underway. Its recommendations specifically address people with diabetes; other neuropathic conditions also need specialist assessment. (6)
This illustrates an important exception to treating an imaging report as the final answer. A normal early X-ray does not always exclude an active bone and joint process. The symptoms, examination, and stage of disease influence what investigation is needed.
Infection, gout, fracture, and other conditions may resemble Charcot disease. An ulcer or wound adds another question: is infection present, and how deep does it extend? Charcot disease and infection can coexist. The clinician must determine whether wound care, laboratory tests, additional imaging, or other investigation is appropriate.
Can Charcot foot be treated without surgery?
Often, initial management is nonsurgical. Its purpose is to protect the foot and prevent further deformity, rather than simply reduce discomfort. Casting or a specialized protective device may be used; later, footwear, orthotics, or bracing may help support a stable foot. Surgery can be considered when instability, deformity, or skin risk cannot be managed adequately through nonsurgical care. (1)
Offloading means reducing the load on vulnerable structures. The IWGDF guideline generally favors a non-removable knee-high device for active disease with intact skin, with alternatives when it is unsuitable. Walking aids may help reduce loading. Device choice and permitted weight bearing require individual assessment. (6)
A generic arch support is not equivalent to this treatment. Nor should someone improvise a tightly fitting device over a swollen or insensate foot. Fit, skin condition, circulation, and follow-up matter.
Recovery is assessed over time. A good day with less pain does not establish that the foot is ready for normal activity. The plan should distinguish protection during active disease from support after the condition has settled.
What does current research tell us about treatment certainty?
A systematic review underpinning the IWGDF guideline examined diagnosis, treatment, remission, and prevention of reactivation. It found 37 eligible studies and emphasized the shortage of high-quality evidence. That limits precise predictions about the best protocol and an individual’s course. It does not negate the importance of recognizing and protecting a potentially active Charcot foot. (7)
Temperature monitoring can contribute to follow-up, but it is not a stand-alone diagnosis or a home clearance test. A 2024 review highlights the low-certainty evidence and conditional recommendations around monitoring. Examination and other findings remain necessary. (8)
Do PRP, marrow, or other regenerative injections have a role?
For suspected active Charcot foot, an injection should not replace urgent assessment, immobilization, or offloading. The guideline does not establish PRP or bone marrow concentrate as a treatment that reverses active Charcot destruction. Evidence for an unrelated tendon or plantar-fascia condition cannot be transferred to this diagnosis.
PRP is a blood-derived preparation; marrow concentrate contains a mixture of cells and other components. Donor cord-tissue products are different again. None of those descriptions demonstrates that an injection will restore a collapsed arch or stabilize damaged bones and joints.
If assessment instead identifies chronic plantar fasciitis or a separate tendon problem, treatment can be discussed using evidence for that specific condition. The site’s plantar-fasciitis injection article addresses a different question. It should not be read as a treatment recommendation for Charcot foot.
References
- American Academy of Orthopaedic Surgeons. Diabetic (Charcot) Foot. OrthoInfo. Accessed October 14, 2026.
- Marmolejo VS, Arnold JF, Ponticello M, Andersen CA. Charcot Foot: Clinical Clues, Diagnostic Strategies, and Treatment Principles. Am Fam Physician. 2018;97(9):594–599.
- American Academy of Orthopaedic Surgeons. Plantar Fasciitis and Bone Spurs. OrthoInfo. Accessed October 14, 2026.
- American Academy of Orthopaedic Surgeons. Progressive Collapsing Foot Deformity (Flatfoot). OrthoInfo. Accessed October 14, 2026.
- American Academy of Orthopaedic Surgeons. Stress Fractures. OrthoInfo. Accessed October 14, 2026.
- Wukich DK, Schaper NC, Gooday C, Bal A, Bem R, Chhabra A, Hastings M, Holmes C, Petrova NL, Santini Araujo MG, Senneville E, Raspovic KM. Guidelines on the diagnosis and treatment of active Charcot neuro-osteoarthropathy in persons with diabetes mellitus (IWGDF 2023). Diabetes Metab Res Rev. 2024;40(3):e3646. doi:10.1002/dmrr.3646.
- Raspovic KM, Schaper NC, Gooday C, Bal A, Bem R, Chhabra A, Hastings M, Holmes C, Petrova NL, Santini Araujo MG, Senneville E, Wukich DK. Diagnosis and treatment of active Charcot neuro-osteoarthropathy in persons with diabetes mellitus: A systematic review. Diabetes Metab Res Rev. 2024;40(3):e3653. doi:10.1002/dmrr.3653.
- Rothenberg GM, Killeen AL, Holmes C. Reviewing recommendations from the IWGDF 2023 guidelines on the diagnosis and treatment of active Charcot neuro-osteoarthropathy: highlighting the role of temperature monitoring with illustrative case reports. Wounds. 2024;36(6):206–211. doi:10.25270/wnds/24029.