[The planter neuroma (Morton's disease)].

This a metartarsalgia that is most often found in adult women. The diagnosis is based essentially on questioning the subject who complains of a painful episode: sudden pain, often very intense, occurring while walking, at any time of the day. The evolution takes the form of further episodes that occur at shorter and shorter intervals. Examination shows the pain to be located in an intermetatarsal space, typically the third sometimes the second, with radiation to the two adjacent toes. This syndrome must not be confused with rounded metatarsals where the pain is of a mechanical type and occurs in the heads of the metatarsals. Medical treatment (injections, special soles) is mainly a matter of diagnosis. Treatment of this benign lesion of the interosseous nerve is surgical: excision of the neuroma.