Interdigital Neuroma ELFAH (Visit this link)
Also known as Morton's metatarsalgia or Morton's neuroma, although Morton described neither (Morton thought this was a problem in the 4th MTP joint and Betts described the "neuroma" 70 years later).
The "neuroma" consists of degenerative and fibrotic changes in the common digital nerve near its bifurcation. However, there may be similar changes in adjacent unaffected nerves and it is not known why one becomes symptomatic. A number of causative factors have been suggested:
entrapment by the deep transverse metatarsal ligament
tethering of the 3rd space nerve by the anastomotic branch between medial and lateral plantar nerves
traction on the nerve by hindfoot valgus, interdigital bursitis or forced toe dosiflexion in high-heeled shoes
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Added: Sun Oct 28 2007
