None of these organisations is affiliated with this site, and none of them endorses it. They are listed because their material is good.
National medical libraries and health institutes
MedlinePlus — Foot Injuries and Disorders
Produced by the U.S. National Library of Medicine. A well-organised gateway to plain-language material on the full range of foot conditions, with onward links to primary sources. Its diabetic foot and nail diseases collections are the relevant sub-pages for two of the biggest topics on this site.
NIDDK — Diabetes and Foot Problems
The U.S. National Institute of Diabetes and Digestive and Kidney Diseases. Concise, authoritative and practical on prevention, daily care and warning signs; its companion page on diabetic neuropathy explains the nerve damage that underlies most diabetic foot problems.
StatPearls via NCBI Bookshelf
Clinician-level reference chapters, freely available, hosted by the U.S. National Center for Biotechnology Information. More technical than most patient material, and correspondingly more precise — useful when you want to know what the evidence actually says. Chapters relevant here include plantar fasciitis, onychomycosis and diabetic foot ulceration and complications.
National health services
NHS — Heel Pain and the wider NHS conditions library.
Short, clear, well-maintained pages written for the public, with explicit guidance on when to seek help and how urgently. Directly relevant pages include bunions, ingrown toenail, fungal nail infection, athlete's foot and foot drop. Service and referral details are specific to the United Kingdom, but the clinical content is general.
Professional academies
OrthoInfo — American Academy of Orthopaedic Surgeons
Patient-education material written by orthopaedic surgeons, with good anatomical explanation and honest accounts of surgical options and their limits. Useful pages include plantar fasciitis and bone spurs, Morton's neuroma, hammer toe, ingrown toenail, stress fractures of the foot and ankle and progressive collapsing foot deformity.
American Podiatric Medical Association
The national professional body for podiatrists in the United States. Publishes public-facing foot health material and is the reference point for what the profession is and how it is regulated there.
Diabetes organisations
Diabetes UK — Feet and Diabetes
Practical, well-written guidance on daily foot care, risk assessment and what to do when something changes. Among the clearest patient-level material available on this topic anywhere.
World Health Organization — Diabetes fact sheet
Global context on diabetes prevalence and complications, for the wider picture behind the foot-specific material.
How to judge a source you find elsewhere
Four questions cover most of it. Who published it, and do they have something to sell? When was it last reviewed? Does it cite anything, and can you follow the citation to something real? Does it tell you when to seek help, or does it only tell you what to buy? A page that answers the first three well and does not answer the fourth at all is usually marketing wearing the clothes of information.
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