Acquired Flatfoot: Article from eMedicine covering all aspects.
Flat Feet: Information from the British Orthopaedic Foot & Ankle Society.
Flat Feet in Children: Information on appearance, causes and when to seek help.
Pes planus: Information from the MedlinePlus Medical Encyclopedia.
Pes Planus: Information from eMedicine focusing on orthopedic aspects.
Tibialis Posterior Tendon Dysfunction: Causes, clinical features and treatment.