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Morton's Neuroma is a condition affecting the forefoot, where the nerve located between the metatarsal bones (the long bones in the middle of the foot) becomes thickened or enlarged. This condition typically affects the nerve between the third and fourth toes, which is the most common type of intermetatarsal neuroma.
Other types of intermetatarsal neuromas, such as Heuter neuroma and Hauser neuroma, are less common. Diagnosis typically involves understanding the patient’s history and symptoms, conducting clinical examinations, and may include imaging tests such as ultrasound or MRI to confirm the presence of the neuroma and rule out other conditions.
Signs and Symptoms of an Intermetatarsal Neuroma
Sharp, burning, tingling, numbness, or shooting sensations in the ball of the foot that may radiate to the toes
Palpable thickening and tenderness between the metatarsals
Aggravation of symptoms when wearing closed, especially tight-fitting shoes
Causes of Intermetatarsal Neuroma
Neuroma is often caused by excessive pressure or irritation on the nerve. This can result from activities that involve repeated stress on the foot, such as running or wearing tight, high-heeled shoes. Certain foot types or structural deformities, such as flat feet or bunions, may increase biomechanical stress and compression on the area, leading to further irritation of the nerve.
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Risk Factors of Intermetatarsal Neuroma
High-impact sports, overuse, or repetitive stress
Tight or ill-fitting footwear
Prolonged periods of standing or walking
Treatment and Management of Neuroma
Relief of symptoms from a neuroma often involves reducing nerve compression and irritation by identifying and addressing the underlying cause. This may include:
Footwear Change: Choose shoes with a wider toe box and ensure proper sizing.
Padding and Cushioning: Use padding to absorb shock in affected areas and avoid walking barefoot at home.
Custom Foot Orthotics: Used to reduce the compression between the metatarsals and alleviate nerve irritation.
Advanced Interventions: For more persistent cases, treatments such as steroid injections or surgery may be considered.
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