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Mortons Neuroma Excision Surgical Technique

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CPD/CME Points: 0.5

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There are a limited number of pathologies which present with pain in the 2/3 or 3/4 inter-metatarsal area, a mortons’ neuroma being one of the commoner ones. Others are mechanical pain from the metatarsal head, MTP joint synovitis or least commonly degenerative change of the MTP joint.

Pain may be located purely under the effected metatarsal heads or may radiate into the toes and be associated with numbness in the web space or toes. On occasion splaying will effect the position of the toes in the effected web-space.

The first line of management of a Mortons’ neuroma is usually non-constricting and supportive shoe-wear with a low threshold for steroid and local infiltration to reverse the reactive swelling of the digital nerve that comprises a neuroma. The injection may be performed with or without ultrasound guidance, though intercurrent pathologies such as MTP joint synovitis or plantar plate tears are not confirmed without imaging being used. MRI can also be used to diagnose the condition.

Surgical excision is highly effective for treatment of the intrusive pain associated with the condition but minor degrees of residual associated symptoms are not uncommon post-operatively and realistically the forefoot takes 6 to 8 weeks to resolve after such surgery.

 

Author: Mark Herron FRCS

Institution: The Wellington Hospital , London

 

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