Interdigital (Morton's) Neuroma
Historical
- 1876 coined Morton’s Neuroma by Morton
- Betts 1940 (Adelaide) described lesion of the digital n in 1/19 consecutive dissections of the third and fourth interspace
Other data since that time includes the following four points
- Pain stems from the terminal part of the common plantar digital n near point of division into two proper digital n in 3/4 cleft normally but occasionally the 2/3 cleft
- Entrapment of the nerve
- Cardinal sign is acute tenderness on moderate pressure applied upwards and backwards in appropriate web space
- Histology of lesions reveals three constant features
- Atrophic changes in nerve itself
- Fibrous proliferation
- Obliterative changes in the contiguous artery
- Atrophic changes in nerve itself
Contents
References
Webpage Last Modified:
31 July, 2011