[Tendinopathies of the foot].

Tendinitis of the foot is frequent and is generally due to mechanical overload or inflammatory rheumatic disorders. It most often involves the posterior tibial tendon when obesity and calcaneus valgus combine to contribute to mechanical overwork, or in the early stages of rheumatoid arthritis. More rarely, the anterior tibial tendon or the fibular tendons are involved. The anatomic-clinical stages proceed from oedema to fissuration necrosis and ruptured tendon. The long-term risk is of a sinking internal arch and a fixed calcaneus valgus. A simple but effective treatment is the correction of the calcaneus valgus, but surgical arthrodesis may be necessary.