Morton's metatarsalgia.

In a series of 25 patients (predominantly women) with Morton's metatarsalgia, the most likely site for a neuroma is the third cleft of the left foot. If a swelling is present or if radiographic examination shows toe divergence then the diagnosis in unlikely to be a simple digital neuroma. A review of the literature suggests that there are other causes of pain in the forefoot. Usually the pain is diffuse by when it is localized, Morton's metatarsalgia is diagnosed. However, causes other than a digital neuroma, e.g. traumatic bursitis and rheumatoid arthritis, epithelial cyst, and foreign body should be borne in mind.