Greetings.
Morton neuroma (interdigital neuroma), is a perineural fibrosis and nerve degeneration of the common digital nerve. Morton neuroma is not a true neuroma, although it results in neuropathic pain in the distribution of the interdigital nerve secondary to repetitive irritation of the nerve.
The most frequent location is between the third and fourth metatarsals (third web space). Other less common locations are between the second and third metatarsals (second web space) and, rarely, between the first and second (first web space) or fourth and fifth (fourth web space) metatarsals.
Poorly fitting and constricting shoes or shoes with heel lifts often contribute to Morton neuroma. Women who wear high-heeled shoes for a number of years or men who are required to wear constrictive shoe gear are at risk.
Treatment strategies for Morton neuroma range from conservative to surgical management. The conservative approach to treating Morton neuroma may benefit from the involvement of a physical therapist. The physical therapist can assist the physician in decisions regarding the modification of footwear, which is the first step to treatment. Recommend soft-soled shoes with a wide toe box and low heel (eg, an athletic shoe). Other possible physical therapy treatment ideas for patients with Morton neuroma include cryotherapy, ultrasound, deep tissue massage, and stretching exercises. Ice is beneficial to decrease the associated inflammation. Phonophoresis also can be used, rather than just ultrasound, to decrease pain and inflammation further. Surgical excision of the area of fibrosis in the common digital nerve may be curative when conservative measures are unsuccessful.
Other possibilities to consider are:
Rheumatoid arthritis and other systemic arthritis conditions
Hammer toe
Metatarsalgia (plantar tenderness over the metatarsal head)
Metatarsal head osteonecrosis
Freiburg osteochondrosis
Ganglion cysts
Intermetatarsal bursal fluid collections
True neuromas
Please feel free, if you need further inputs.
Dr. Arun
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