Morton's Neuroma
Medical Author: William C. Shiel Jr., MD, FACP, FACR
What is Morton's neuroma?
A neuroma is growth (benign tumor) that arises in nerve cells. A Morton's neuroma is a swollen, inflamed nerve located between the
bones at the ball of the foot (usually either the second or the third
spacing from the base of the great toe). A Morton's neuroma is caused
by compression of the nerve of sensation between the ends of the
metatarsal bones at the base of the toes.
What are symptoms of a Morton's
neuroma?
A Morton's neuroma causes a "burning"
sharp pain on the bottom of the foot in the involved area. The pain of a Morton's neuroma can
radiate
to the nearby toes. The pain is usually increased by walking or when
the ball of the foot is squeezed together and decreased with
massaging. It may force a person to stop walking.
How is a Morton's neuroma diagnosed?
The diagnosis of a Morton's neuroma can usually be made by the doctor when the history of pain suggests it and the examination elicits the symptoms. The foot is usually tender when the involved area is compressed and symptoms of pain and sometimes tingling can be elicited when the sides of the foot are squeezed. Magnetic resonance imaging (MRI) or ultrasound testing can be used to confirm the diagnosis if necessary.
How is a Morton's neuroma treated?
Symptoms of a Morton's neuroma can completely resolve with simple treatments, such as resting the foot, better-fitting shoes, antiinflammation medications, and ice packs. More rapid relief of symptoms can follow a local cortisone injection. Symptoms can progressively worsen with time. For those with persistent symptoms, the swollen nerve tissue is removed with a surgical operation.
- Morton's neuroma is a swollen, inflamed nerve in the foot.
- Morton's neuroma causes a "burning"
sharp pain on the bottom of the foot.
- Treatments for Morton's neuroma include resting the foot, better fitting shoes, antiinflammation medications, ice
packs, and operation.
References: Clinical Primer of Rheumatology, Lippincott Williams & Wilkens, edited by William Koopman, et al., 2003.
Kelley's Textbook of Rheumatology, W B Saunders Co, edited by Shaun Ruddy, et al., 2000.
Last Editorial Review: 3/26/2008
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