Morton's Neuroma
Definition:
Commonly associated with metatarsalgia (see above). Morton's neuroma is an entrapment of the interdigital nerve lying between the third and fourth metatarsal bones.
Symptoms:
Exhibits similar symptoms to metatarsalgia, but may also cause numbness, tingling and discoloration of the third and fourth (lesser) toes.
Biomechanical etiology:
As per metatarsalgia. Tight fitting shoes tend to aggravate this condition because they squeeze the metatarsals together, pinching the nerve.
Treatment:
Orthotic treatment may greatly assist in the early stages of morton's neuroma. Realigning the metatarsal shafts, redistributes the weight on the forefoot and prevents interdigital nerve impingement. Severe fibrosis of the interdigital nerve may require surgery. However, the use of orthotic devices may prevent further problems postoperatively.
Additional treatment: Ice therapy. Wear wider shoes to allow the metatarsals to spread.
Exercises:
- Intrinsic forefoot exercises.
Summary
Morton's Neuroma:
Entrapment of the interdigital nerve lying between the 3rd and 4th metatarsal bones, caused by excess pronation.
Treatment:
Pre-molded orthotic or custom made orthotic. Other: avoid narrow shoes; intrinsic forefoot exercises